ive mastered the engine now tbh, had it back apart in no time now i know whats what but just the fooking tensioner fucked up so have to take collapsed tensioner back and fill out warrenty form. Would i be best getting a couple of garage documents saying its caused by the tensioner? as proof as its the reason for failure. sisters bf also checked the timing and belt before hand and knows these engines and said was bang on and so was tension so i know its no error of mine