Mine are modded for aimtraks too. Actually I am using the "Named" knockoffs, which is also what I would purchase for these. I am not happy with the constant need to re-calibrate. I wish there was an update to have them work similar to the IR arcades, where the top and bottom screen have IR lights. Those seem to be accurate without constant calibration.
The tracking in the Namco USB2GUN video was done without a screen flash, so I guess that is why it was odd. If the device itself causes the screen flash similar to the ActLab VGA guns, then you are probably right about tracking correctly on each trigger press.
Ok, well I am on board with this. I guess now it depends on Purple Tophat, if he can negotiate a board run or something.