I had a TCR too. Someone told me that to clean the tracks, you simply rub a coin across them. It did work, but once I forgot to unplug it first. Fucked.

Astro Wars (Hand-held game) was the nuts, I think I still have mine somewhere.

I remember having a fucking great bike-light too, which was like a flag-pole that went down by the rear wheel and the whole thing illuminated.