My third question is how to adhere your prefab carbon tubing to pre-preg carbon fiber? Example: a 42mm ID tubing which happens to be the exact size id of a bicycle Bottom Bracket PF30. (press fit 30). However I need to beef up the wall thickness by wrapping pre-preg around it, then compress and heat to cure. I am concerned there may be a delamination issue between the tubing and the pre-preg. Is there something I need to treat the tubing with prior to applying pre-preg?