This is what me and my dad use to break tires beads off of rims (we have this red machine screwed into a giant piece of plywood for stablity (i spray cold soapy water from a spray bottle and he uses the machine and breaks the beads)
I had unreliable spark on a honda cr250 dirtbike (i think the stator might be it but i'm not too sure) (sometimes the spark would be bright and then nothing for 2 kickstarts) very sporadic and dissapearing spark
I use bleach in a spray bottle from the dollar store to get oil and grime off! cafeful not to get it on any rubber or plastic because i read it has the same drying out effect as intense sunlight