sticky throttle

[breandan.mcilwain at gmail.com (Breandan Mcilwain)]

ok so i just picked up another black 16v!!  and it has a few things that
need addressed.  first is the throttle, when the engine is pulling @ WOT in
first and second gear the throttle cable sticks, but as soon as the clutch
is depressed the throttle releases.  now i checked the cable and it seems to
operate fine, and i dont see anything hindering its operation.  could bad
motor mount be the culprit?  im thinking while at full load this is when the
motor would move the most causing a "pinch" somewhere in the cable.

anyone have any experience with anything like this?

thanks
Breandan