Theo and others, thanks for your valiant efforts. Ive tried all the available drivers and settled on QHY drivers which I can now use noise free and with 1% Gain and an Offset of 111. When binning from 1x1 to 2x2 and 4x4 the ADU goes from ~350 to ~750 to ~1200 and so this looks like the settings for my camera. With the TVDEE it was 1%Gain and offset of 50. Guess that its a lesson for all to check it if you change your parameters. Noise may have been due to partially seated s video cable not being all the way in.
Allan
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