Using your info that you posted above, I punched in the lat and long for your location and aiming at 72W, (which should be fine); I get the following data:
AZM=172.8
AZM Mag=182.2
ELEV=47.41
SKEW/Polarizn=-5.79
POLAR MOUNT MAIN AXIS ANGLE=37.18
POLAR MOUNT DISH OFFSET TILT=5.15
Take your time (like you're already doing). You're doing pretty good just putting the dish together right for a first time! I also suggest you add several washers at the dish arm connection so that the actuator is as straight and bind free as possible. Once you lock a satellite you'll be turning that dish!