BigRyan 
If the spinner arms are ok, same with the other inner parts, they do sell on ebay etc.
The wearing part on the spinner arms can wear thru and they drop down and the dishes don't get sprayed properly.
Just grab the end of it, if its loose & moves up & down too much its probably worn out and thats all thats wrong with the dishwasher.
The solienoid, use a screwdriver to pop off the bit of steel around its outside, pull it off the spindal.
Shove a steel rod or screwdriver into each end of it, now bend them so the solienoids in the centre and the plastic housing cracks and it breaks in 1/2 & you can pick he 25gms of copper wire out.
Be carefull with stainless steel, its edges are really sharp. Dishwashers will slice you more often than anything else you scrap down. Wear wrist protection of some sort and be extra carefull when you Push something to break or move it.
Stainless is mostly nonmagnetic, if its magnetic its classed as 'steel'.
If its very slightly magnetic, its actually probably 'High grade stainless'.
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