Performance issues on 2017 Drive R EFI

[jcom]

My cart has become very sluggish. Cart is 1 1/2 yr. old and was good when new. Dealer does not know what is wrong. They ordered a throttle cable but I am VERY skeptical .

If I move the accelerator very very slow and gradual I can get the engine to full throttle or very close to it and the speed is back where it should be. But this takes a long time and distance. If I put the accelerator down fast the cart seems to labor badly and will not allow the engine to go to full throttle. It has even held me below 15 mph when doing this.

I am starting to look elsewhere for the problem. Maybe the clutches????
Is it possible a clutch is sticking and not operating properly and keeping the engine down.

Is there lubrication to the clutches as I have not lubricated them if there is.

Cart has 250 hrs. on it. AZ cart with high speed gears.