Filling a sealed transmission is huge pain. Does anyone make a drain plug that a fill pump can be attached to with a nipple? The plug needs to have a one way valve so a nipple can be removed and small plug can be installed just to be sure no accidental loss of fluid can happen. Procedure would be simple pull plug drain, install plug remove small fill plus add the nipple put in a little more than what came out pull the nipple install small plug. Go through the warm up procedure pull the overflow plug. Reinstall overflow the plug. It would be so easy it could be done at each oil change if you like. I was trying to find what I described here, the only thing I could find was a YouTube video of a drilled out plug with a pipe plug. Does anyone make a devise like I described?