I installed a new pansat 2500a with a Norsat 0.6 db lnb. The receiver shows excellent LNB signal strength (above 70%) but no signal quality. Also, the receiver shows small level a quality and suddenly jumps to 100% quality then back to 10%. Is this a receiver, LNB problem. The dish is a 10 foot with excellent C-band reception. I am using an older KTI dual Ku/C band feedhorn. Is this a possible problem?