All TP's on 99W are strong here. If I knew I was aimed at a sat, I think I'd bypass the switch, run the receiver direct to one lnb. (use a RG splice to bypass the switch) Do a blind scan. should get the same TP's appearing on H and V polarity only if the lnb operates well on 13v. If all it sees (good Q) is H TP's, you can bet the lnb doesn't like 13v. I would then move that lnb to the other port on the feed, and repeat. (after deleting TP info from first scan to minimize any confusion) Then repeat the above with the other lnb. If a scan doesnt see any TP;s, I'd suspect something with the feed. And here I would rotate the feed 90 degrees, and repeat, to determine if one feed port is truely funky.