how i learned is just through many battery packs... Even till this day i dont make ride height all around the same.. ive noticed it doesnt matter.. DRIVING IS #1!!!
Hell nothing matters when your a newb .. my cars never went straight LOL, I dont know about the lowering throttle thing, as though i never did it but i always do when i go to track.. to get use to the track..
You might want a diff in the front. but since its a 415 u'd have to get the yokomo diff