This is caused by the clutch not disengaging the whole way. Either the master or slave or both need rebuilt. I have seen on some bikes, after a lot of abuse, the clutch basket gets notches worn into the slots that retain the "fingers" of the friction plates. More common on dirt bikes than street bikes. I know on my CR5 I couldn't even sit still with the bike in gear, holding the clutch lever in. The basket was severely notched. I took a flat file and smoothed out all the notches. The clutch now works better than it ever has. First time I could start the bike in gear in YEARS... Not saying the basket is the issue with your max. Just saying it is not disengaging for some reason.