I am still confused why would you want to do this. You are in Detroit area which is approx. 83W. +/- 45 degrees lets you see anything between 38 (maybe you could catch Telstar 11 at 37.5W) to 127W (galaxy13/horizons1). That is really all you can get from your area (maybe going as far east as 30W to catch Hispasat). If you try to go any further west you can only get IA7 at 129W (which doesn't have much) and any further west is all
C-band and few Echostar birds which don't have any FTA programming any way.
I have both
SG2100 and
SM3D12 and i like SM3D12 a little better, but I have lost ability to go to Hispasat and T11 since I put it up (but no big deal since I didn't go there that much anyway before with sg2100). One nice thing with sg2100 was that it would do +/- 70 degrees out of box.