at first i thought the pedal arm was missing the switch completely then i checked its back and there's sort of a ridge that gets captured by those guide tabs on the switch. the pedal action is ok, it just doesn't reach the switch sufficiently somehow. i'll inspect both the pedal and the switch for any adjustability. wish i had that cdrom manual now.

ps. it just occurred to me that the throttle linkage could be holding back the accelerator pedal. is there an adjustment that would give the accel pedal more play?