4.0 ranger trouble codes

OD light flash and codes after installing rebuilt transmission. Hello I just recently installed a new rebuilt transmission the other day and driving today it's fine in town but on the highway I noticed my over drive off light was flashing, so I read the codes and I'm getting P0733 and P0735, I...

So I've replaced the MAF, all O2 sensors, TPS, EGR, and a few other minor parts in this little excursion to pass emissions. I made it 200 miles and did get my tags renewed but now I'm throwing the P1511. I cannot find any vacuum leaks or other obvious problems and I'm really hoping it isn't the...