I just ran into my first Terk intergated multiswitch dish, the cust had bought it. With my channel blaster meter I could only peak it on what I thought was the 101 sat but the customers HD200 Sony receiver said no sat A or B, only C. To further confuse me, while I usually start my alignment at 199 deg, 40deg Azimuth SE Wisc)and then peak it, the Sony reciever said to use 213 deg and 36 deg Az. I found strong signal at both locations but the Sony receiver would only show signal on sat C. I ended up getting a channel master HD dish with separate multiswitch and it worked fine, at 199 deg.
What meters are being used with the integrated lnb/multiswitch dishes?

the customer probally had one of those recalled units that doesn't work unless it only has one or two feeds hooked up and it's warmer than 40 degrees out. I wasn't notified of the recall until I had pulled my hair out for about 14 hours worth of work and troubleshooting, so I know the ins and outs of the issue pretty well and your description matches it perfectly.

See Automatemyhome.com.they sell a channelvision meter called the M-2000 that will read the 3 birds and will also read RF (CATV)using a accumalative effect response,Peak 3 birds no prob.