Hofner Tuning Key and Bushings Needed.

I'm looking for bushings for 7mm shafts and a single replacement machine head. My client bought a set of vintage keys off of eBay but one of the keys had the shaft and gear replaced with a 6mm shaft. See photo. I've found a single key on eBay for $46 plus shipping from the UK but this is just too steep (he paid $70 for an entire set). Bushings including shipping can be had from Germany for $19. If you guys could look though your parts bin I'd be most appreciative and will pay a reasonable price.

Thanks!

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