Well, my 601 is officially rebuilt into a manual. Carlos's tips among others here were very helpful. Thank you all. I hope this long post and pics helps someone else.
1st is removing the rings on the stem. Wrap them with bicycle inner tube rubber and twist with pliers. They can be worked off by hand once loose.
I found that a 1/2" drill will slide down the tube and the drill flutes will pass the tabs.

I used a strip of bicycle inner tube rubber and made one wrap around the tube as close as I could to the drills end. The drill didnt touch the atomizer. Then if you look, you can see where to grab the tube that the drill OD is. Its abt 1 mm smaller than the tube. Used standard gas pliers, not the flat faced ones, so it grips in an arc around the tube. A good twist and it breaks free and then just twist back and forth and pull. It didn't deform the tube either. It gives a little when you grip to touch the flutes of the drill but leaves no permanent dent. There's wires going in the tube and you won't want to twist these off. You will only have abt 3/8"-1/2" max of freedom when its loose so go slowly. Since my circuit was bad I cut the wires lose to remove the bowl. If you want to save the pressure switch or need to remove the atomizer, remove the glue at the end of the tube and then the atomizer and pressure switch can be pushed out from the other end. Don't push out touching the bridge top or where it meets the atomizer body. It will crush the metal foam and result in poor wicking. I used 2 popsicle sticks , cut flat and keepin them against the tube walls parallel to the bridge it pushed right out.
The atomizer has a silicone boot on it.
Next is removing the bowl. The upper threaded ring can be pryed up and out with a screwdriver carefully and be sure to protect the rim so you don't dent the wood. Bicycle inner tube rubber again here! Unlike Carlos's silicone, mine was a friction fit and appeared the varnish/urethane coating ran down the walls for a perfect seal.
When working around the bowl to loosen the glue, I'd recommend bending the feelers gage in an arc to match the bowl. If left flat, its easy to gouge the upper rim of the bowl. I made it abt 75% down the side and it was not progressing at all. I slide a large flat tipped screwdriver down the neck, under the bowl, and with a slight twist it popped right up and slid out.
Since this was being converted to a manual I removed everything from the bowl except the battery retaining arm and spring. It has the solder point you need at the bottom of the screw.

I used a tact switch, measured everything out and drilled a 1mm hole in the bowl for my switch stem to go through. The stem is a 1mm carbon fiber rod with a plastic disk drilled and glued into it. That face touches the tact switch. Then I made a small plastic "button top" and drilled it 3/4th thru and glued it on. I tried it prior to see the amount of travel it needed and trimmed the length just a little long.
I wired it all up with the green 26ga enamel-covered solid wire from Rat Shack. It's the 3 spool pack. The red 30ga would have been easier to push back down the tube. Polairty doesn't matter to the atomizer so I soldered the positive wire to go to the atomizer and the negative activated by the switch.
Feed them down the bowl and out the neck and slide the bowl back in positioning the switch for the switch stem. The switch stem goes in first from the inside and make sure the bowl will clear it! I dremeled my wood out a little for clearence.
If you've changed or rebuilt the atomizer now it goes back in the tube. I coated the tube and silicone boot with PG and worked it in till it was just flush with the tube end. Then I pushed it into place with the pressure switch.
The top of the bridge was 28mm from the end of the tube. That allows abt 1/4" to go into the cart material. I removed the pressure switch, soldered the wires, heat shrink and slide the tube back onto the neck.
I've never reglued my tube or bowl. Friction fit is holding fine and will be easy to remove later if needed.
My coil failed 2 days later. Easy now to take out and fix. I'll have a posting in the Atomizers Rebuilding thread on how I did it.
No more expensive paperweight!
Good Luck,
Vaporer