I have had two problems thus far, one being the Plastic servo horn stripped which is to be expected with a metal geared 25kg servo. I just popped in an aluminum 25t I had laying around. The other is the right front inner axle pin flew out of earths orbit. This was another easy fix after I found the right hack. I used an old slightly bent Rustler shock shaft. It has a nice tight fit and I trimmed it to size and sanded the edges. Before I installed them I cut some shrink wrap to size and installed them on all four inner drive cups. I have ran it very aggressively after the the fixes and have no problems so far! My first Redcat to date and I have owned quite a few over my many years. Love this thing!