Hi, I have a 1977 Puch Maxi that I have been trying to get running a little better. It has this clanking noise when idling and at low speeds and tops out around 25 or so. The thing is is that when I got it it was missing the air filter and float needle. Today I made an air filter from a water bottle and some nylons and that helped some, as it wouldn't idle before. Still need to pick up the float needle. Also, I'm not sure if it has the right kind of plug. It has an NGK BR9ES. I have read Fred's guide but haven't been able to check the points gap yet. Is the clanking a timing issue? I'm pretty new to mopeds so any advice will help. Thanks.