so i have a older bianchi sport sx i picked up this spring. The bb left drive fixed cup has come loose a few times. The threads are still good from what i can see. My lack of being ablet o get it tight with a large adjustable wrench on the small flats is likely the problem. Turning the cranks forward is also the way the cup loosens. I believe this is italian threading. Even though this bianchi was probably made in japan and has tange superset bianchi tubing......would it still have italian threading because of the bianchi name? The frame is certainly not an itailian frame from what i can tell.
That said.....should i invest in the park bb tool and try that? Invest in a sealed bb and go that route? try out sheldons grade8 bolt and washer trick in reverse using my large breaker bar? I have read that some users have a fixed cup wrench.......put it over the flats.....a bolt through the hole and run a washer bigger than the face of the bb face which when tightend down a bit will hold the wrench directly on the flats a bit better for when you are applying massive force to get it tight. It keeps it from slipping off.