AM, yeah they use Happ controls. and your theory would be correct

I swear.... what Minwah says seems to be exactly it... but, you know it can't be as everyone here would be up in arms over bad cherry microswitches

so... a flaky keyboard encoder designed for ps2 use only, and it's a few years old now. What bothers me is I just had it working great with my athlon system for over a year straight of heavy gaming. Then a few weeks back problems. I should probly try running system restore.
or the ultimate fix, replace the encoder with a proper new one and add a 4way stick, scrap the whole hotrod and build a case to match my tb

still, would like to figure it out.... I'll try some other computers to see how it behaves on those.