Hey everyone new to the forum. This is my second build. First one went smooth, never had any issue. This second one has been a nightmare. But I think I might have the problem and possibly the solution at least pinpointed. The top bar of the frame on this mountain bike is very tight to the top of the engine causing me to have to mount the carburetor slanted at an angle. Could this be what's giving me all the problems? Has anyone dealt with this before? Thanks in advance