The Tech-Racing one way gear plate (EV0001) is now back in stock at RainbowTen. I received my gear plate today along with some nice Tech-Racing grey al. body posts (EV0002) for the front bumper to replace the plastic posts which seem to bend and break.
Will try the plate this weekend and report back. It looks well made and comes with extra long screws to mount it onto the diff gear and one way. About US$3 each and if they do work will be the best "hop-up" for the Evo3 yet
I will also be spending some time shimming the spur gear holder to minimise slop in the drivetrain.