EX5UR very good performace in terms of "simple is the best", no jam before.
I think servo is very compatable, I use one very old KO analogue servo and one MG995, no problem at all.
By the way, any ching cal tell me where to buy seperate receiver KR407S or KR210S, and what price ?? Cus I want to use one EX5UR on 4 cars ha!