The reason Side Trak failed commercial is probably because the game is sooooo damn hard, it has quite a learning curve, I've barely made it to the second level myself.
I've got two boards, one I found original and another I stumbled that oddly enough was severely hacked to be Targ, at some point I'm going to deconvert it. You can easily spot a Side Trak board as it has an IC location that's populated which is left empty on all other games, it's used to produce the black and white composite signal while all other games that use that board are RGB and don't need it, what the location number/letter is offhand I can't remember. By the way the picture KLOV has in the database for the PCB is
WRONG, I think I might have been the dingbat that submitted it too, it doesn't have that spot populated.
I'm trying to write a novel right now, I have no idea if anything will become of it but I named the restaurant the story centers around "The Side Track" as it was a former train depot, the depot idea came from a place nearby to where I live (now demolished

) and the name I took from the Exidy game. I may have the characters find an actual game somewhere too, but I'm wondering about copyright issues in using the actual name so I might rename it, but it will be Side Trak and I think I'll have my male protagonist salvage it and take it home.
If the novel by some miracle gets published some day I'm going to hunt down a full Side Trak game for myself just on general principles even if I've got to save up for it and have it shipped freight.