So, I have a Minarelli V1 engine on my moped and it wasn't starting. I had fuel, air, and spark, but it just wouldn't turn over. When I tested the compression it was around 85-90 which is really low. I changed the piston rings and all the gaskets and it still isn't running. It doesn't have a clogged exhaust and there isn't any switch that needs to be turned on. Any help is appreciated.