I've run the E.T .21 mills in my buggy for the better part of 2 seasons now. I just like the way they feel, compared to other engines I've run. As for potential carb issues, what I do is pull the rubber boot off. Once done, you'll see the groove that the boot sits in. I will fill that with some Permatex...ie, silicone sealant, let it sit and skin up for maybe 10 mins., then replace the boot, and lastly, gently place a ziptie around that end of the boot. I have had 0 carb related problems since I started doing this. One other thing, if you use ARO, ( I choose not too ) I would recomend ONLY GMK Supply Afterlife. Some AROs have been "rumored" to eat away at the epoxy filling in the crank. Gary from GMK has stated that his ARO is designed to be epoxy safe
