@deltec, you need to give lots more information, dish make, motor used, lnb make, receiver make and model, image used and if you know the cable. Did the installer provide the equipment? Are you usIng USALS.
Sat cable with the copper braid is better than stuff with silver and so on. Black Ulta Lnb is very good and Golden Media.
A cloudburst can affect signal but not a normal shower of rain. Did he set you up on 0.8west and use Al Jazeera and Galaxy to tweak H and V. ??
23.5e is very strong, and 16east AND all the others if rig is correct.