I have a set of almost pristine KD17 racks available.  They really are very nice and are free to whoever wants them, you would just have to pay packing and shipping.  Pics are below.   

They are yours.  You can PM me your address, zip, and phone #.  I'll figure out packing and shipping costs.

I also have the button you need for the No-Heat dry option.  

Congrats on getting this machine.   From the pictures the tank looks in really good shape.  The underside pics look good too (especially the pressure switch hose).  As John mentioned don't worry about the surface oxidation on the heater nuts. 

You can clean your filter out by soaking it overnight in a set tub (start with the hottest water you have).  You can also add a dishwasher tab or Dawn to the water to help loosen the dried food soils.  Use a stiff brush to remove the loosened debris.  Hot water and a stiff brush will help clean out the sump (do not use dish soap or scouring powder on the sump; plain hot water allowed to sit for a while is all you need.  Also, do not use any harsh scrubbing pad.  

Once cleaned up you will be very pleased with it's performance (it's loud, but it cleans!)  :)