So, I'm also back to report on my experience with the Tilemahos.
I completely stripped the atty, manually degreased all the parts with detergent, water and a fine toothbrush, ran it through the ultrasonic cleaner and finally give all the parts a wipe with a cloth soaked in isopropyl alcohol and let them air dry. I did see several things. The threads were not particularly clean, especially on the housing and base. I even found a big lump of polishing compound still left in one of the air slots in the base! When I've bought GG stuff before, it's always been perfectly clean and it's my mistake to trust that things would always be that way. It was very easy to remove the posts from the post assembly. They obviously had not been fully tightened when the atomiser was originally assembled.
Once I'd properly cleaned the atomiser, I re-assembled it and used pliers to tighten the posts and the centre pin extension. I also screwed the adjustable centre pin on tightly with pliers. The amount of force that I used with the pliers was just a little more than I was comfortable with, so I really hope I don't ever have to completely strip the atomiser down again. I shouldn't have to remove the posts at least and I'm certain that these connections are now pretty much gas tight.
I made a spaced NiFe30 coil around a 3mm form with five wraps to give me a room temperature resistance of 0.33 ohms. I used KGD cotton as my wick.
I'm happy to report that after four whole
tanks of
juice and the mod being taken to work and out and about that the resistance has been completely stable. I've been enjoying a very reliable and satisfying vape - exactly what I was looking for in the first place!
So, in summary, if you want your Tilemahos to work reliably with temperature control you need to strip it, clean it properly and reassemble it very tightly before using it. You can't use the adjustable centre pin if you are going to use temperature control either, it must be screwed in all the way and tightened with pliers.
... 
