Originally Posted by yyhayyim

Well boys...I ran a few packs on the MI3 today and the car already had the best times I have had with any car w/ rubber tires and mod motors...It was the fastest car on the track...and it was so easy to handle...its deadly quiet, like turnning on a honda civic and letting it iddle....it barely makes a noise, and sometimes you might think its actually , off...

However, I did have an issue with the diff getting loose. After aboout the 2nd pack, it just began to get loose. I had to retighten/reset about 3 times, and it would get loose again after a few laps...this happened contnuesly and got really anoying...I got so tired of the loose diff screw that I just rebuild it by flipping over the diff rings, and using the "un-used" side and re-assembled. After that I ran for another pack(8 mins.) and had no issues...anyone know what could have gone wrong? Why would it keep getting loose like that?