Hi all this is my first post. I have a few problems. I purchased my bike about 1 year ago. It had been sitting. I got it running somewhat and then it sat again. I sent it the shop almost a month ago now and they got it running. Said it needed a carb kit and a wire fixed and the pet cock fixed. Now after he got it running the hard lines coming out of the cylinder heads are leaking. Is that just a regular 14mm o ring or is it a square cut o ring? And I was told that a regular round 14mm o ring should seal it even if it was a square cut in there. Hope all the info I gave helps!