Project in my work stand at the moment is a Colnago C40 of the B-stay variety. Whomever built it up before I got it must have used something on the threads when they mounted the cages, because they're all gummed up. I've tried chasing the threads, but the mounts just spin in the frame. Does anyone here have any ideas? I could pop rivet the cages on, but that's really a last resort.