2019 Chieftain LTD. Cold start, fine. Running down the road, fine. Warm start not so good. When I park for a short while, 30-40 minutes and restart the bike sometimes the throttle sticks. It is not a mechanical problem as the throttle grip returns to normal position. But the engine will continue to rev for a few seconds and then return to idle. If I rev it again it will do the same thing. This can go on for about a minute and then it returns to normal operation. I don't dare ride away until I make sure it's over its tizzy. One day I restarted and pulled out in traffic and approached a red light and as I let off the gas it just kept pulling. I had the presence of mind to grab a handful of clutch and brake and stopped safely only to sit there with the engine revving to 4000 rpm. As usual after a minute or so of this nonsense it begins acting normal again. Indian told the dealer to do a re-flash which they did to no avail. Anybody else had this issue?