Hey guys I finally got my 904 in after putting it off in my 78 lebaron. But I’m having some issues. I had the trans (non lockup) rebuilt with the stage 3crt kit their budget converter, and a trans go shift improver had a good friend (does trans work on the side) go threw it with a fine tooth comb. He admitted he hadn’t had a mopar trans apart in almost 15 years but was confident in his ability and having a rebuild book. Guy rebuilds 4-5 trans a year.. I put it in the car. I filled the converter with a quart and filled trans with 5quarts. started the car in neutral (level went down) topped it back off to about 8-9 quarts. Thought all was good put it in gear n slowly cycled the the gears to get everything lubbed up. But when I put it in gear the trans acts like it’s no trying to engage. No movement no rpm change no nothing. so I immediately check 1. Fluid level - little over full 2. Shift linkage- perfect 3. Pulled trans cooler line and started car in neutral- looks like a murder happened but pump is working.. 4. Pulled pan- nothing out of the ordinary but will try to attach a photo.. So I call my guy up and he says to pull the whole trans he’s concerned somethings not right in the valve body. My question is is there anything else I can do before pulling the whole thing out again?