Antenna is OK..... motor is too weak.The antenna seems too large
Laminas makes a PM specifically for this dish.This motor is rubbish - sorry to say. You are much better off with a proper polar mount. You can just about get away with a Jaegar 1224 motor, preferably beefed up. However, I found that even that is not strong enough to handle this dish without wobbling in winds - especially in an exposed location like yours.
https://www.campanasat.it/laminas/615-asp-1800-polarmount-x-laminas-180-cm-semiuniv-modificato.html?search_query=laminas&results=43