hard shifting 833

I think you're on the right track. Make sure the clutch is disengaging properly and confirm what fluid you have in it. It needs to be a GL4-rated gear oil. Some of the newer synthetics are fine as long as they are a GL4 MTL fluid. My A833 was kinda notchy and slow running a conventional GL4. It smoothed right out after changing it over to Specialty Formulations MTL-R. Amsoil offers a really good synthetic 75W-90, but it is pricey.