I was all on-road until the Revo came out and the monocoque setup (F1 like) had me. My NTC3 doesn't get near the action anymore. You can remove the optidrive if you do the FOC or not, it makes no difference, you just have to watch that you are completely stopped before you switch into or out of reverse. I got tired of messing with the stupid micro servo's, had to go titsup on me, then said it's time to lighten this baby up. FOC is one of the best mods you can do to your Revo, IMO and it's only like $12. If your really desperate for some cake you can sell the poop you remove and get some of your money back. Me, I just gave away my optidrive to someone that needed it, I think on this board. BTW, Eddy, I know you got all kinds of cash laying around, you may want to get one of those RD Quick Turn shafts, awesome if you plan to race at all!