Sorry for not answering sooner, I spent half a day yesterday and some time this morning until the rain stopped me. Thanks for the installation manual for the DMX 741 it helped alot. There was a section in the manual that did not worked as shown, it stated that if only C signal was wanted, to "Connect your receiver to the side "LNB" port of the DMX LNBF" it did not worked as stated, it worked on the "RCV" port. Used the 5150 setting and it worked better than the other settings. Still missing quite a number of channels (almost half) throughout the whole arc. It is possible that the Dish needs some serious fine tuning. Will continue working tomorrow to see if there is some improvement with the project.
Thanks again.