pulled more of the rear harness out , no fault , narrowed it down to ccm ,3 , put harness back in , then we tryed the old actuator on the bottom sieve , no good , and then tried the new one , it worked , (previously niether one worked on the top sieve ), so tried it back on the top again and away she went , so try undoing the harness connectors on the things b4 replacing the ccm"s, not saying its a cure all , but saved us a couple grand ,