2016 KTM 125SX acting sluggish at times.

Didn't ride for a good two months due to a small injury, my last ride on the bike was a brutal mud hare scramble. Two months later I finally get to ride again, bike revs out good, get onto the track and open it up and doesn't feel like it wants to pull, keep riding thinking maybe it just needs cleared out, no luck. Go to pits, New plug, go on track, does the same thing but clears itself up about two laps later and runs fine all night.

Week and a half later go ride again, Do three 20 min motos and runs great, park it for an hour for a lunch and track groom break. Take the bike off the stand and start it and it does it again, this time in neutral it revs noticeably slower, and is still sluggish as hell, doesn't pull in any gear again. Take it to the track and try to ride it out like last time. 5 laps and it doesn't work, change to a new plug, doesn't work, same thing.

Anyone have any ideas, my jetting is spot on, i'm running 110 race fuel, PC mod motor, Clean airfilter, 32:1 with Castor 927. Never had this problem with this bike and have had it for a while now.