Don't feel bad, though. My R80 ST has a sloppy shifter pedal, although its a different design. It has a bronze bushing that appeared to be the worn culprit. I obtained a new bushing (OEM) and discovered it was was as sloppy as the one in the shifter lever before pressing it into place.
Edit: Just an off-the-wall thought: If you have any shops locally that can knurl valve guides and your exisitring shifter has a solid bushing in it, you may be able to get it knurled to take out some of the slop. Old school machining at its best.
Merritt Island, FL
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