ZGemma H7S tuner A 1W, tuner B 4 LNB's 1W, 5E, 13E, 19E - all scanned - 1W tuner B not showing up on channel lists.

Hi

I have Tuner A set up for single satellite 1W, and tuner B has 4 LNB's as described in the subject. I'd like to record on Tuner A, then watch another channel on the same transponder on Tuner B. I've scanned 1W in on Tuner B, but only the channels on A show up. I can't tune in on 1W from B. Is there a way of forcing a change? OpenA 6.3.