I finally installed the RC Monster hardened steel idlers yesterday and WOW! I can now pull back as hard as I want on the throttle and not hear the dreaded sound of shredding gears! I did however manage to strip my beloved RRP rear ring & pinion! A quick trip to hobbytown and harbour freight tools remedied my blues and I have now put 7 runs on the bigE' without a hiccup! Another Great product that has exceeded my expectations!