My Speed Pro TT has a internal gear hub, the SRAM Dualdrive, that is messed up. It slips and loses its gear when too much force is applied. Currently, it will only run on the highest gear reliably, although with a grinding noise.

It irks me to ride a bike that is somewhat broken.

The bike has the Dualdrive 30 set up, so it has a SRAM Force 10-speed cassette. I'm wondering what you people think is the best way forward to fixing this bike? Looking for something cost efficient.

In my mind, I'm thinking of just buying a new wheel that will accommodate a 10-speed cassette and just ride it as a ten speed. Thoughts on where to buy these parts?