I have an 08 Accord V6. I had the timing belt replaced 5 weeks ago. 2wks after the hydraulic belt tensioner sheered off on one bolt. I had a new tensioner put on and 2 wks after that it sheered off again. Would anyone have an suggestions why this would happen? I watched the mechanic put the belt on after the tensioner replacement and he had a very difficult time releasing the tensioner to put the belt back on. I am concerned that this may keep happening?