Recheck you dish elevation make sure your pole is dead plumb.The Large dish is used for sky, everyone here in southern Spain uses an 80cm dish for Intelsat 907 with perfect results
Good point. Depends on whether the said meter is HD version (which does resolve DVB-S2) or not.seeing as the G2 is only DVB-S and the satback is DVB-S2 your only hope is to catch one of the DVB-S feed transponders broadcasting to get an accurate signal/alignment
Hm, to be honest, I don't see the tree being a problem here. It looks too far away and too low to cause an issue at 41 degree elevation.
I would be inclined to try tuning in to this transponder using a receiver (which one are you using for this?) after getting a weak signal on your meter - it's possible that Satlook Micro has an issue with high symbol rates that BBC Satback uses.