The 9IMOD servo didn't even last a full battery pack on the track before dying. It sounds like a stripped gear but when I opened the case to check none of the gears had any damage.

Regardless, because of Amazon's generous return policy I'll be getting my money back. For now I don't plan on replacing it with anything else. I decided I want to focus on my 2wd buggy. But when I do feel like returning back to my ebuggy I'll probably try replacing it with something like an AGFrc or a Power HD.