I have tried the rho ptb method. I cut one slit in the end that goes in the inner cart first, and put one side on either side of that little plastic bridge. FYI, this is my first experiment with this or any cart mod. I am having trouble getting the filler to let go of the fluid. I don't know if my juice is too thick, or if I folded my ptb too short. It was flush with the end at first, but then it pushed back, and doesn't bounce back when I remove the cart from the atomizer. My juice is VG with 20% H2O. Is it possible that its too thick. I don't get many drags before it seems the atomizer is dry. If I put it down and come back to it, it does a little better. Still not great. I'm getting so irritated that I'm considering dripping, but I drive a lot for my job and dripping seems a little hazardous. How many drags do you get from three drips? Any advice would be great!
I was having the same trouble you are and firstly I would recommend trying a thinner juice. After an experience I had today, I realized that sometimes its true that juice can make or break you. My original juice was on the thick side and I noticed that I couldn't get more than 4 or 5 drags before it needed topping off. To be honest I haven't tried the PTB mod with my new juice because like you, I thought about dripping because I felt I wasn't doing the mod correctly, and experimented with a spare battery and atomizer. I did everything though. I made the PTB mod shorter, I made it longer, I frayed it, I kept it unfrayed, I rolled it up at least 5 different ways, I made it a tight fit, I made it a loose fit, and nothing seemed to do it for me. However the one thing that remained the same in all my PTB mods was the juice. I cut the juice with 50 percent VG for more vapor and that was the only change to the juice I made. So that may have been the culprit all along.
If you do try different juice or other advice and it still doesn't seem right for ya, get a spare battery and atomizer and try dripping. I have to tell ya, even with my crappy juice the Sidesho vaped like a master, however I was getting a burning type of after taste and not a lot of flavor from my juice. Now I realize that my juice was the issue. I just got in some new juice today from another vendor and dripped it on the atomizer, and hoooo boy was it tasty. Draw was smooth and vapor was amazing. I realize that my Sidesho was just doing what it could with the bad juice I was using, and now that it has some quality juice, its so good I can't even describe it. The Sidesho is performing amazing. And I did notice that this new juice is thinner.
When dripping, I get about 10 to 15 nice smooth great draws. Way more than I was getting from my filled carts that I spent hours modifying. However I never tried this new juice I got on the PTB carts so I would start there if I were you. If filling carts with new juice solves the problem or someone elses advice works then you are set.
But if that doesn't satisfy you, trust me friend, drip one time on the Sidesho and you will be in heaven. Kind of think of dripping at the trump card. If everything else doesn't work out for you or you just don't like refilling carts, try a drip.