Not getting all my DISH HD channels

You are going to have to do a new Check Switch routine before the receiver can learn what settings you want it to use. Hopefully, you changed the dip switch settings so switches 4,7 and 8 were down and all others up.
I highly recommend that you first clear your existing check switch by unplugging the incoming coax from your receiver and run a check switch. This will find nothing and clear your receiver memory. Now reconnect the coax and follow the exact instructions for doing a Check Switch. They must be followed in a very specific order and time frame to get the necessary results.
If you don't have a manual, you can get the step-by-step instructions here:
Winegard Check Switch

Thanks for the link and the info. Dish support had walked me through this, but when I called back to follow up, did not get through to the right person, then was transferred to Winegaurd, which promptly connected me to VM/disconnect.