I'm not sure if this is serious or not but I had it taken to a shop begause I couldnt keep it running. I thought it was maybe a fouled spark plug of something with the choke. It was hard to get started and would not idle. The mechanic said that he has to adjust my front valve and he can not do it until tomorrow when the cylinder is cold. He said it came from running it on the drag strip wide open. Is this going to be a serious issue or what. Just a little worried about what it can be.