To expand a little on Mike's post above:
Have you updated the LNBF on your dish in recent years? If not, you likely still have the older Quad LNBF that had been in use for almost 20 years. The LNBF currently in use is called an xKu LNBF and is almost identical in appearance to the Quad. Although Shaw suppored both kinds for a time, in the past year or so it has been required to have the xKu.....you should have had a warning message in your program guide stating that you needed to upgrade to the xKu to continue to receive programming. So if you're still using the older Quad, you may get unexpected results, if it works at all, because it is incompatible with the firmware ("channel map") in your receiver. (The channel map is updated and sent automatically to your receiver via the satellite from time to time.)
The LNBF issue may not be the source of the problem you're describing.....we need more details from you on that. But even if you solve all the other problems, trying to use the older Quad LNBF is going to be problematic.
So, in sum, you need an xKu LNBF and it should be matched to your dish: a 60e dish (the smaller dish) needs a 60e xkU LNBF; the 75e dish needs a 75e xKu. The type of LNBF is identified on a sticker on the back it.