I can now scan in both those frequencies, as I discovered my problem was due to my V-Box II.
I have a twin LNB, on a 1.2 CM dish, using a 1224 motor, one of the cables goes thorugh the V-Box II, and the search was using this tuner, when I removed the coax cable, from the V-Box II, and instead connected it directly to the VU+ Duo 2 all the channels scanned in.
This could be a compatibility issue, between the LNB, and the V-Box II, or similar to DECT telephone interference, being caused by the V-Box II.
When I have time, and we have better weather, I might try a different LNB, as I now know where the problem lies.