I am having an issue with signal loss during overcast(not heavy) and light to moderate rainfall. The affected stations are those on 61.5. 72 and 77 do not exhibit any loss of signal. Is it normal to lose the signal from one satellite and not the others. I have had a technician to my home on three different occasions. The last time it was the Quality Assurance Specialist. The first tech replaced the LNB, the second "cleaned up" some connections, the last said everything looked great, but did say that it was unusual to have just one of the satellites lose the signal and not the others. The dish is a 1000.4 and I have a 722 and 222 receiver. Thoughts or suggestions?