Hey! I'm having the same issue. Fouling clutch side. Put these plugs in. Fouled clutch side within 4 hours. Changed it again and my son rode it all last week with no problems.
Like what? It's fuel injected with warranty. I was going to take it in but then they'd have it just long enough to kill the rest of the season. Wanted to keep it running so my son could ride it. Looks like we did that.
In my 2012's I ran BPR9es plugs. Was mixing 100-1 during a piston fix break in. Oiler linkage fell off went WOT. Rode a whole ride like that no fowling. Still have the same plugs in there. I run IPONE sled oil, with smell of strawberry's. You could of probably smelled my sled a mile away on that ride lol.