Hey guys, just looking for a wee bit of advice on my '00 WR4. I melted a piston in it about 6 months ago and since then have rebuilt it properly (rebored to 426cc, piston, rings, gaskets, cam chain, etc..) and I've put maybe 300kms on it since then.. All was going beautifully until yesterday when i rode down to the local MX track and was talking to some mates when one of them asked &%$#@! the green stuff was that was leaking from my head gasket area.. great. Anyways, I had to limp home on the bike and it ran perfectly - ie: felt as strong as ever.. and didn't leak at all on constant throttle, only when i blip it. It isn't exactly spurting out or anything like that - just a very slow almost bubble when you blip - and only from the right side of the cylinder.. obviously this isn't a good thing, but could it be a simple job of just re-torquing the head ? or am I fubared (again) ? Cheers for the help I'm thinking of selling it and going to a newer YZ250 two smoke after I get it sorted.. i'm sick of these bloody 4 stroke probs..