Billy,
If you are capturing a glimpse of these channels, then your system parameters are set properly, which leaves your alignnment and proper dish size/LNBF to be scrutinized.
What size dish are you utilizing? What type of LNB/LNA do you have installed? Is this a motorized system? How well are the rest of your C-Band satellites and channels coming in?
I am not a guru for C-Band stuff, so if this goes beyond the generalities of dish alignment and size and good and proper cabling / connectors, then I won't be able to help much. I can only address the obvious things. Before you adjust anything physical, double and triple check your cables and connectors, ensure that they are up to par. Then, confirm that your dish antenna is properly suited for the EIRP for this satellite in your location (is it large enough to amplify the signal?). Can you tweak the polarization of your LNB/LNA to improve your signal quality? Without reducing the signal from other sats?
If you can verify all of the above, then that just leaves an alignment issue. If you have a BUD, then you cannot easily flex the dish to identify your alignment error as you can with a smaller Ku-band dish. You will have to use the tips from the C-Band gurus.
My gut instinct is just a wee bit of an alignment problem. That is without really knowing your whole system, of course. If you provide more details, that will help.
In the future, please provide more information regarding your system components. That will help us help you. Give us every detail that you can offer, just don't make a novel about the story.
RADAR