[Brumos RSR]

I personally test on my Scalextric track and once, maybe twice a year on a routed track.  I however and my guess is most of the NA guys are not as familiar with the SCX tracks. I have several Thunderslot “plastic track” guides that I often use. If needed I can send one next series for a tech check. I will check out the NSR guides for future runs also.  Let’s race on and have fun.

I also have both the Thunderslot both shallow and deeper guides, but I wonder if they would be suitable as they do have "sticky out points" and the problem with ones like the "Red Slot- it " general purpose guide is that the sharp pointy end tend to catch on the track rail joints. The great thing about the NSR guide is that it is very uniform and smooth, even the plastic feels more slippery than the harder slot it guides. So apart from the standard Ninco Rally car guide, I think the NSR is the next best thing, better than the newer standard Scalextric guides etc.
But once I get my Rally track back up and working again for next January, I will give the Thunderslot guide a try.

 I round off the Front of the TS guide.