Have been using a SG2100 motor on my 90cm fortec dish, am seriously considering switching that dish for a 120cm fortec dish (in hopes of getting some c band along with ku - as I'd use a combo lnbf) Now can I get away with using the same motor? Its specs say it's for up to 120cm but weigh wise only 27 lbs., the 4ft fortec dish is 31 lbs. Has anyone used a SG2100 on a fortec 120cm dish? I know Sadoun sells a slightly heavier duty motor, DG380 I think...