I would be grateful for any assistance. I have got an old Sky dish (Grundig made, pics attached) and I intend to adjust its LNB skew to get a better signal quality from HotBird (-10.6º vs. -13.6º required for Astra), however there does not seem to be any screw or bold which I could loosen to rotate the LNB. Is there any way I could change its angle? Alternatively, I could replace the LNB with the modern one, however I am also reading that due to a smaller arm of the dish (with a cross section of 25mm x 12mm), there will be problem with fixing new LNB as it simply won't fit... Many thanks.