Swapped in the SRA secondary into this 420AT i'm rebuilding. I know it requires shaving down the rear speed sensor some, and I took some off before realizing that I didn't have the front driveshaft installed. Got the front driveshaft put in. Speedometer still reads zero and it won't shift past third gear in ES, and stays in first in Auto mode. The ES shifting tends to hang up when upshifting and downshifting, which requires me to turn the key off and then back on. I get error code 22 on the dash. I cleaned out the gears in the ES shifter and put some white lithium grease on them. Anybody who has one of these machines that can give any advice? Does the speedometer read off the front or the rear speed sensor? I'm guessing I need to shave down the rear sensor more but want to be sure.