I agree with Brian. I ran in Fallon, NV for 4 days and DA was 7000' feet. I have a crank pulley though. Send it back, you can at least give us feedback for code3's customer service. That SC pulley could put me well into the 11's, but won't be trying it until someone like you works out the little bugs. Sorry for your troubles but they are actually helping the rest of us out.