There is a whole long post on this, but, if the support is true, the angle for the motor & dish are right, then find Intelsat at 1degW first, Sirius @ 5degE & go fo it from there. Hotbird,Astra 19.2, Astra 2d & Hispasat 30DegW.
Get the 1st one as near to south as poss 1st by fixing the dish to...