Nooooo....that's why you do about 20-30 miles per hr. You can at a stop rear the engine a bit and put it in drive and reverse back and forth quickly, only if its a governor issue. But this problem you saying really is a damaged sprag that spun in the case. RV's are heavy this is a common...
Also on this when you install the TC with the trans if it does virbrate very badly then the weight on that TC need to come off. It can be done while the trans is in the car, just leave the front cover of the trans off for easy access.
Dude if you need a torque converter buy one at a trans repair shop or a trans supplier. TC's a cheap at hese places $65 to $90 bucks. Also they are rebuilts not new, but just as good.
Dude as long as the fliud level is up, even over filling its ok. Thats not the problem. An old trick to free up a sticky governer, is run the car over 30 miles an hour and then throw it into park, hold it there for like 1 or 2 seconds. This will cause a hanering effect on the governer vaules...