Sorry, I read your first post that you did a complete when all you did was pull the pump.

So, for the ratcheting - sounds like you still have something wrong with the shifter.
Move the lever all the way forward, then count how many detents you need to get to park. 1,2,D,N,R,P = 5.
You need to address that first. Until a shifter is properly adjusted you should never do any diagnosis or repair.

If you installed the pump with the front band tight you likely damaged the input shaft seal/s.
Like 440Jim mentioned, you may have had the front drum move forward when you pulled the pump then when installing the pump you crowded the first clutch disc and bend the teeth.

If you damaged the large reaction shaft seals you shouldn’t have a strong reverse.