Topic: Ninco track
I probably should have researched tracks a little better before buying mine. Some slot guides perform poorly on Ninco track. So instead of changing all the cars over to compatible guides, I carefully took a Dremel and ground the plastic sided edges of the slot. The biggest problem with the slot width is where two tracks connect together. I had read of using a coin dollar, or popsicle stick to force the width out a bit, but I think running the dremel carefully around the slots is a better permanent fix. Now all the various cars run smoother.