I have been having some issues with my Shark ProPlusHD, as anyone who has read my other posts has seen.
I contacted NWA and talked with Jim. I sent in my control box last Monday, had it back yesterday (exactly 1 week after putting it in the mail
) They tested it, replaced the XYZ control card and got it back very quickly. 
GREAT SERVICE! THANKS NWA!
Iampapabear