Sticking Throttle Cable, the saga continues ... Options

[vesnyder]

I want to thank everyone who has assisted so far in debugging my car in making it road worthy, despite my blunders. The latest is a sticking throttle or over revving engine? I've replaced the throttle and clutch cable and think I've made sure they are clear of each other - several times - but yesterday on a road test the motor surged as I was exiting a freeway to the point of engine damage (I think I escaped anything permanant?). I am not 100% convinced that the cable/pedal is sticking - any chnace that the throttle body is wacked? How about adding a stronger spring? I lubed the throttle body but I am not confident I've found the source of the problem and I've got too much work into this to blow the engine before I get a Summer of driving out of it!!