My Katana 1100 had cam towers stripped by ham fisted dealer mechanics, if you F them up.
Anyhow, I'd second what everyone else says and helicoil it. If you don't feel comfortable doing it yourself, find a machine shop in your area, probably won't cost more than $25 or so, take just a second.
Machinists are like wizards and a good machinist can do a good helicoil job with one eye open and both hands tied behind their back!