I've been having this re-occuring problem with raceface diablos BB's in my 05' V10. I'm wondering if any of you have had a similar problem, or if you might have any suggestions on what to do. Here is the problem: My 05 v10 seems to reject diablos bottom brackets. They have a VERY hard time threading in. They thread in perfectly straight, but the pressure needed to tighten it in the frame is unnatural. Its almost feel as if it was being cross threaded, but its not. To check and make sure this was not a fluke I checked a couple things: 1. I re-tapped my bottom bracket threads in the frame with a park tool thread chaser at the shop. The tool has not seen much use so its still very sharp. I had the head mechanic check and make sure it was properly chased. The threads are fine and straight, thats not an issue. However, the BB still wants to do the same thing. That idea is out. 2. Thought the bottom bracket might be a warentee, defective threads, something of that nature. So i grab one of the diablos BB's off the showroom floor. Same issue. I grab another, same issue. Finally I call raceface direct. They insist this is not their fault, and that they lazer cut the threads themselves in house in vancouver. ok, so if its not the BB, and its not the frame threads, what else is left? 3. To stabilize 1 and 2 I wanted to make sure this wasnt an issue with other BBs. So I grab a truvative, fsa, and old isis race face BB. All thread into the frame without any issues. Clean, tightened most the way by hand. Perfect. 4. Do the BB's do it with every frame? No. They threaded into a sinister ridge and c'dale gemini perfectly, no issues. It seems to be a raceface/santacruz combo from hell that is the issue. So. what are ya'lls best guesses for my here situation? I really want to stress that I've had out head mechanics check and go over this himself. None of us have an explaination as to why this is happening. Any thoughts would be great!