OP

Quoted from schudel5:

There are lots of replacement boards available, but none will allow you to reverse the servo rotation direction.
If the original servo gears are stripped, you'll be replacing the servo. If you buy the one from Marco (or several others available) you may need to reverse the servo rotation. Most RC controllers have a reverse bias switch to do this easily. Since the original or replacement boards do not have that switch you'll have to do it physically inside the servo. The two pots on the board are simply trim pots to adjust the open close positions.

OP

Quoted from schudel5:

So you'd need a PIC programmer and software in order to reprogram the chip? Might be nice to include a PIC for CW and another for CCW programs in case you wanted to use an off the shelf servo that's CW. Not everyone has access or knows how to use a PIC programmer.
I like that you've included two different servo pinouts so you don't have to swap wires in the connector. Smart.