signal quality questions

[vassho]

setting up one of my receivers to my BUD blind scanning my KU Birds
once all is scanned and channels are downloaded I am always getting a few channels that the signal quality is jumping from 10 to 99% as it wont lock on
I say this is happening for about 5% of my channels the rest come in strong no signal quality issues and this is happening on almost every sat a few channels with the signal quality jumping around not locking in
any ideas
Thanks

 

[sergei]

From other posting I believe your using a C/KU feedhorn, if correct does this problem always happen on the same channels and are they H or V polarity. Because my first guess might be your servo motor having issue not locking in correctly.