Those of us who have struggled with these over the years, and eventually fixed, or at least learnt to deal with, issues ranging from impossible to zero/wondering zero, to rivet failures (with the inevitable SUIT head bounce) have sort of come to love the humble SUIT.
I have three, ones never worked particularly well, one works fine with the .22 conversion kit ( but wonders in full bore) and the remaining early example works very well.
I never remove it from its top cover though, it works so I leave it well alone!
The sight is a curious design though, when you consider how beautifully thought out and engineed the Inch pattern is, the SUIT is a little heath Robinson....
To be honest, I can shoot just as well/ poorly with my MK1 eyeball and Hythe sight.