Anybody experience this with a 46re?

My transmission will shift from 1st to second but after that you have to let off the gas and it will change. Downshifts fine. Changed the fluid and filter. Ordered the parts off eBay to change the governor and all but parts are different from what I have.
Transmission shop wants 2500 to rebuild. My 96 ram 1500 isn't worth that much.