hey Berwick.G
i went from the rrr wce to an evo and was aprehensive about the standup throttle servo too, i was going to use my old top deck when building the car, but decided to try the evo one with the standup servo.
i have been running the evo for a few months now and havent even worried about trying the laydown servo by using top deck from my old car... car seems good where i have it setup atm, and if it aint broke dont fix it