Sivicman, I am sorry to hear this as I love my T2290 with one exception the one wheel drive, on an incline the mower will not move when one wheel loses traction, a pain.
I attempted to return it after only a couple hours on it and they said they dont do trades that they have a company that will offer them a price.
Wow! now the belt problem, I think I will sell mine also and start looking or just use it for a trade in. Im 80 and not looking for this type of hassel.
I have an old B2620 tractor that has worked flawlessly for many years, one of the mechanics at my local dealership mentioned for me to keep the old tractor because the new ones are not as good. What a shame.
If I could find an old cub cadet or wheel horse from the 1960's I would go with that.
Good old reliable easy to work on.