i have put a few hundred mile on the new overdrive and i love it, but it seems that mine is a little off from what i have read. If you do not use the switch to control the overdrive it will not engage untill you are going 45 mph or faster. ( i had read 27-35mph) which i guess works great, it really is like a 4th gear, but it will not engage in 2nd , because the engine would be screaming going 45. i have removed the govenor, and it looks okay, i have done the electronic test and all seems to be working fine. i was wondering if the fact im using 90wt gear oil instead of the 30w george recommended would have something to do with it?