Finally opened up my Mi3 and installed the "low-temp" screw today (after having it for half a year. Seems to slow down the ability to char a little bit, but not really a "huge" difference. However changing the screen was not particularly painful if you have the right tools.
The whole procedure was:
- unscrew the guitar pick
- 2.5mm hex screw to unscrew the bottom screw
- Unscrew the brass screw which goes through a wire loup to complete the circuit. The might be the hardest part. Had a hard time finding the right screw driver. A standard #2 phillips is too big. A #1 also seems a little big. Had to reach down into my "IT guy" precision tool pouch and find a #0 to lock in and carefully loosen the screw. Once loosened it was easy enough to finish the job with a #1 on my power driver(but be careful not to strip it).
Anyway too soon to tell if it makes a big difference. I'll have to run it through a bong to see if I can avoid combustion. I almost always use an XL8R with 4 borosilicate balls in the bottom as my main pipe. I love the thick glass on that thing(and the Jr). The XL8R resists getting hot better than any tip I've tried (including the LaMart Nub and bent straw tip). This XL8R glass is just so nice and thick, wish all of them were like that. Anyway a little bit of charring on long hard draws, but no combustion. I'm going to keep this setup for a while....