well...my Nighthawk 650 has been in pieces all summer. Today I decided to take my 3rd try at getting cams, sprockets, etc. back in with the correct timing. I successfully got everything installed and timed correctly! I was so happy. Started to put spark plugs back in and plug #3 was not going in easily by hand like the other 3. even with a ratchet on it it was taking more force than I was willing to put on it to get it back in. Removed and retried , gently, a few times. No luck.
Took a pic down the plug hole and you can see the threads messed up a little about halfway down. Ive posted this on my Nighthawk forum but thought I'd post here, too, as this is a relatively common engine problem. Any suggestions on how to proceed? Thanks! (hope Ruffus knows this forum is back online...)