Hi - I think I've made some progress on this...see my previous post. I have just deleted the earlier offering of KB3035583 and re-installed the revised version. This seems to have had the effect of side-lining the troublesome 3022345 to 'Optional Update' status. I'll repeat this process on my other W7 pc and see if I get the same result. - Ric.
Update 1... SFC Scannow completed on first pc... - no issues present.
Update 2... Installed new offering of KB3035583 on second pc...3022345 now optional! - scannow also found no violations here.