Ok, I am really new to the 1/64 stuff, and only got into it because I built a track and timer system for my little boy. But I have a question. Now I understand polishing the axles, and trying to make the care drive as straight as possible, but what I dont understand is why the "fixed axles"? Even though the axles are polished it seems like restricting the axles from spinning is just adding friction to the wheel/axle point of contact, almost like putting a brake on? Ive modded a few cars, the first ones i destroyed, the next few i just polished axles and put back together with minimal gains in speed, and even managed to make a couple of cars slower...Lol. anyway just wondering about the fixed axle? Thanks in advance for any info.