I have just started racing the RB5 over in the States. The car is awesome. I have put the ZX-5 option springs front and rear on the car. A 1mm shim behind the upper shock cap will space out the shock enough to clear the front stay. Also check your rear tire to wing clearance. We have noticed with some tires, you can get wing rub at full suspension travel. Raising the wing solves this problem on the buggy.
The car is very good. Running orange springs up front and yellows in the rear wtih great results. I have been running on high bite dirt so far. The car is very good out of the box. This car should be a sleeper this year and in the right hands is very capable of winning races. The Kyosho plastic seems to be holding up quite well also. A local crash tester has yet to break his car and that is not without a lack of trying!.
