• Thanks all for the advice and offers of help. It was coated at Armourtex and I think they did a very fine job of coating and masking. There were no signs of coat on the inside. The reason I thought it might be deformed through possible uneven heat expansion and contraction, was because there's now a gap between the fixed cup (which is in) and the shell on the underside whereas its flush on the topside. The faces are clean. The adjustable cup is being even more stubborn after a few turns - so much so that the pins on my tool broke. My local bike shop say they can chase, face and install the BB for £20 which seems very reasonable. Will be interesting to see if they also think it's deformed. Thanks once again for your help.
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