OK thanks, ***** ***** gives me a visual of maybe what's going on.
I am going to first start out and I want you to inspect the converters and there operation, I think this is going to give a good idea what's going on and where to start you off.
I'm hoping you have a smart phone as I would like you to remove the belt cover and you can lift the unit up with all 4 wheels off the ground and then have someone film the clutches and you accelerate and where I can watch the clutches as they shift threw from idle to top speed.
To do this you'll need to remove the cargo bed, go to the back and by each light you find plug in connectors, unplug both taillights and then in the same area you find clips and pin for the bed, remove the pins and then lift the bed off, next I'll need you to remove the belt cover, you can maneuver it out without removing the l/h shock, I cant really explain but it will come out, some people feel its easier to unbolt the shock and swing it out of the way, either or you just need to get the cover off so you can inspect the shifting as it goes threw its range, if you can video it and post it up here that would be really good.
Let me know your thoughts or get back when you have performed what I asked, just be careful when the unit is off he ground and if you are running it with the belt cover off, you don't want to get your hand near the spinning parts.