Thanks Polman. Doesnít seem like driveline.... it feels like transmission isnít engaging until rpm picks up more than Han expected. I can rev up and down a little with no engagement. So I always try to ease into it to slowly launch, but I get hard engagement.
You may need to clean and service your clutches and replace the belt if the engagement has become more harsh.
Polaris recommends to clean, inspect at 1000 miles/100 hrs and replace any worn parts as needed... more often with hard use.
I think some year models of the 850's were known for sorta harsh engagement. You might contact Ryan at RVS and see what he says about a clutch kit to smooth out the engagement.