Do you mean they swear by the stuff?

Anyway got this fitted last weekend and it worked well on its first off-road excursion as this pic shows!:



A 20min job turned into a 2hr one as usual. To anybody doing a similar repair here are just a few pointers:

- Put a tiny bit of copper grease on the internal threads of the new BB before screwing them together. It could be years before you remove them and you don't want them seized up.
- The large diameter conical ring (part #2 in the YST instruction diagram) only goes one way. Don't get it reversed or you will damage it on tightening.
- There is no need for any of the Shimano 2.5mm plastic spacers (2 drive side, 1 non-drive side for the 68mm shell). The YST dimensions compensate for these, so leave the spacers out completely. Not sure what you would have to do in the case of an E-type derailleur bracket....
- A little grease too on the inside of that narrow HollowTech adjustment nut to stop it binding to the crank arm as you screw it in fully to the home position before installing the left crank itself.
- The YST pushes everything out a little, so due to the new chain-line you will need to re-adjust the front shifter cable anchor/cable tension, and the upper/lower limit screws on the mech. Then re-index your gears with the barrel adjuster as normal.
- Inspect everything after a few miles.