HiHOHo I have a arc 110 1985. I changed the casing on my trike as it was cracked now it won't start and is giving me a really week spark . I changed the magneto coil in case I damaged it taking the fly wheel off and it's still a weak spark I've cleaned all the electrical connections . It run fine before what could I have done wrong please help as it's really killing me as I really want it running