After years of looking I was finally able to buy an Aristo RDC3. It is like new but it is stuttering at slow speeds and I do not know why. I had the whole thing apart to refasten a couple of doors and a window that had popped off and the electronics looked good and all the plugs were tight. I checked the trucks and there is plenty of grease and they look hardly run.
I use a Revo base unit and at 30% it starts to move but it stutters all the way up to 70% and it smooths out at 75% and above but that is too fast.
What is going on here? Is this common with these? Is there a fix? This thing appears to be so new that maybe it needs to be broken in? Yes I did add the Euro diesel sound to it.
Any ideas as to what could be wrong?