Thanks #2 think I'll give that a go, the leak is un the underside out of sight. I reckon the long term plan will be to have it welded, but I'll need a second bike up and running first.
Not too impressed with petseal. Judging by the layer thickness of the stuff I'm cleaning out, I had a good coating, plus getting hold of the stuff is proving difficult. You can order it ok, but no one holds stock. Only found the one bottle last time round and would have to travel to M & P to get anymore today!
Blew buddy, I'd be greatful if you could ask the question just in case this latest idea doesn't work.
Cheers all.