[ccjohnson]

One thought I have, and others may point out it's faults that I am not seeing, is CLR / Lime Away in fresh water tank. I would drain fresh water tank completely. Then fill back with 20-25 gal fresh water. Add in 2-3 gal. CLR / Lime Away. Try to agitate a little by adding Lime Away / CLR halfway through the 20-25 gal fresh water. Next open furthest water faucet until you think line has been filled with this solution 1-2 gal. should be plenty. Open other faucets to get solution to each faucet, working back to nearest one to water pump. Make sure ice maker runs 2-3 cycles (throw this ice away). Run washer for smallest level. If any solution is left in tank run washer again until tank is drained (this is based on you saying washer valves seem to be sticking). Next refill fresh water tank with 30-40 gal fresh water & repeat the process. I would do the 30-40 gal rinses at least 3 times completely emptying the fresh water tank each time to make sure system is fully flushed before using any water or ice. Kind of like using CLR / Lime Away to clean up a coffee maker.