@ I’ve got a Corsa with a C20LET fitted and last week the head gasket failed. I stripped it down and replaced the gasket but now that I’m putting it back together I’ve hit upon a problem with the timing belt. I’ve followed all the online guides and the Haynes manual for a 2.0 16v but the belt is slack down the front side and then it’s too tight to go on the exhaust cam. Or, if it does go on fine it ends up being one tooth out. I’ve tried it loads of times but it’s just not playing ball and my patience is about to expire so gonnie help me please! Tom.