I've got a question for the Tamiya experts.. I purchased a 415MSX used that came with extra a-arms that were different than what's on the car. It had the Junn (?) on the rear and what looked like EVOV on the front. It had other a-arms/steering knuckles included. Which a-arms should I be running for carpet/foam and for outside/rubber. And how do I know which is which? thanks for the help!