105 I havent had any issues. What I do is dial up 107.3 on DVB and get a good lock....then move the dish enough that the quality goes bye bye. Hook up the 4DTV and options 6-0-5 right arrow to diag C screen and watch that meter while I move the dish
I can get +8 or higher on 105W with the 6 footer and do did tvropro
I just started with static angles and powered on to the arc and got a picture with 4.0 Ebno. After tweaking a little I ended up with 10.7 Ebno. W5 is really easy to find. Use an inclinometer.