So, talked to the satellite guys, who thought that adjusting the skew would have minimal effect... boy were they surprised!
I have to say that on their meter, they could see a big jump, on my receiver's, there was little immediate difference........ but as the night drew in you could see that the signal remained stable longer.
CH4HD died at about 9.30 and CH5SD stayed alive until after 10.00, but then the high winds came in and the picture started really jumping.
So better? Yes. The answer? Not sure.
If I can get to 10 - 11 each night I will be OK, but we have heavy rain today and signals are down, but rising again as I write!
So next trick..... try my new, very expensive Kathrein multiswitch later today probably.
I certainly think the new Invacom and especially the feedhorn are necessary for 2F UK beam due to the weaker signals.
I also believe that you need a professional meter to squeeze the last drop out of the system..... having seen the lack of change on both my Sky HD box and main linux Enigma 2 receiver as they changed the skew, it is necessary.
So hopefully tonight my 1.25M dish will deliver on at least SD to 11.00 p.m. ............ always the optimist!!! Roll on the next time change then I would feel comfortable I could make the time target!..................... who needs Winter time!
..... and Steve, if I had a head for heights and easy access to the dish (but unfortunately its on the roof apex.) I would also try playing with the LNB supports....... the Invacom LNB is a real heavy beast and although judging by the pics the 125 supports look stronger than the 150 dish, it would be worth trying