I am about to change the timing belt on an ex disco 200tdi fitted to a 90. I have done several 300 tdi timing belts but never 200s. I watched a number of videos on youtube and it seems to be straightforward enough but have heard various complaints of snapped bolts, etc. Should I go ahead or should I tell the owner to buzz off and bother someone else? (he's a mate of mine and I service his vehicle as a return for IT-related favours I constantly bother him with).