Yes I did I had an air leak that I could not find I think it was in the primer, but when I installed the new ofna tank, I had to go from a 160cc to a 125cc but since I replaced the tank the trunk run strong from start to finish, and it took care of the 1/2 tank self leaning problem. I gives me less run, but it's worth it. You saw it on the hill, it runs awesome...