Originally Posted by
tfisherak
So, I just reinstalled bb assembly and cranks and grabbed both crank arms and don’t notice any play. Am thinking the fixed cup was coming loose and causing play. I am guessing maybe just a little loctite will solve the problem vs the $80 bb the shop said I needed? When the problem arose, that was the cup I had to hand tighten frequently to get me to the bike shop.
This is good news. That's the problem then. Just a case of good old epicyclic movement. All this spindle taper talk is academic. Which is not to say unimportant.
Yes, as you now know, Italian cups will unscrew if the BB is a little too tightly adjusted. Loctite can help but I find that proper adjustment keeps if from happening if you get that drive side cup nice and tight.