when you set your 20,30,and 40 pin the floating pin can't go up to where your 50 yard pin should be. the other thing is when the sight pin is set at 70 or 80 it is just above the level...not a good sight pic.
Spot Hogg has a new sight the Tommy Hogg
The Tommy Hogg's front control yardage adjustment gives great quiver clearance without sacrificing sight adjustability. Each is compatible in single pin, small guard with 3 or 5 pins a 7 pin available in the large guard.
And the HHA single pin
If you are shooting 70-80 go to movable pin sight cuz at 70 every yard counts and you can set the sight to 72 76
and put that pin on the target.