carryout, dish 211K problem not fixed

I had Dish come out on Friday and heres what happened. There were 2 technicians that came out , one was a regular installer and the other was a chief technician. They proceeded to tell me that the problem was the cable type (rg59) and that the frequency of the output of the 211k through though the coax output wasn't compatible and that all the cable ends installed by the manufacture were unreliable. I called BS on that diagnosis and proceeded to show them that my 311 receiver produced perfect pictures on both crt TV's. they then told me the 211k because it was hi def was different and then I took them in my house where I have a Dish 711 hidef receiver and it worked fine with my crt TV's hooked up to the coax output. I then asked them to pull a new 211k out of their truck and give it a try. They said they didn't have a 2l1k but they had a 211Z and that it did have coax output but they did have a adapter they could use to go from RCA to coax. They hooked it up and lo and behold a perfect picture on both TV's. As another benefit the 211Z is smaller and doesn't put out nearly the heat that my 211k receiver puts out. I would suggest anyone with a 211k upgrade to the 211Z with the RCA adapter.