All good Mic, having owned my Norton since new I have learned a lot of little tricks in over the 43 years of ownership, my original kicker was stolen back in 79 and them days it was hard finding a new replacement so had to push start my Norton for 4 months before I got a new replacement, but the new one kept getting loose and was always tightening the bolt, just wasn't as good as the original kicker, but once opening the gap and the longer bolt after cleaning the thread and putting the nut on as well it stopped it coming loose, but as the years went by that fix started to loosen up but not as bad, now with the folding kicker all is good and been on for just over 7 years now and hasn't come loose yet so fingers crossed should out last me.
Ashley