You guys running A500/518/ 46R etc OD autos..........?

I am running the a518 (727) unit. I have the 3 pin plug trans. One has power going to it all the time and the other 2 get earthed when lock up or overdrive is wanted. I don't have a lock up converter but when I flick my switch for my overdrive it takes around 1 second to work. But when I switch it off it takes a while. The speed has to slow right down until it disengages