'94 Isuzu Rodeo TPS - What's it look like inside?

I'm wondering if my TPS (Throttle Position Sensor) is missing a piece. The moving lever inside my TPS is triangular shaped (see image here -> http://img.eautopartscatalog.com/live/C7012177553DEL.JPG), that slides around the throttle lever which is a straight flat metal bar (1/4" wide)... it's possible that it could work but my gut feeling tells me there's a missing adpater piece to connect the two. I'm having some intermittant power issues which is why I'm asking. Does anybody have a picture of what theirs looks like? Any help would be appreciated. Thanks.

-Steve