I donno about you guys... . but I need a better description before I try to diagnose anything. The 2/3 upshift could be something as simple as a band adjustment. No reverse, could be the front clutch, or rear band.
The Front clutch also applies when 3rd comes in. The Front band lets go and the front clutch grabs.
Sounds like possibly a bad seal for the Front clutch off of the info we have.
First thing I'd do is change the fluid and filter.
Josh