AMK Automotive (steering racks) - anyone used them?

[zygalski]

Thinking about buying one as these remanufactured parts seem like very good vfm.
http://www.ebay.co.uk/itm/POWER-STEERING-RACK-VAUX...
My PAS rack sometimes clonks whilst turning at slow speed, so time for a change & I'd like any feedback about this company because my choices are somewhat limited.
Cheers