[TimGriff6]

I've looked through an old post & can't find answers to this question.
To get to 80 yards and be able to sight on the target, I have lowered my anchor point by about a centimetre. This has two benefits in that the sight is now higher for each distance and I am also getting about another inch of draw. But the problem is that to do it I have raised the platform on the tab so that the gap between the finger spacer and the platform is much bigger than the width of my index finger and the tab seems to be unstable in this configuration. As a result, I am losing consistency.

Is it ok to have the platform set high above the index finger?

Is a more expensive tab more stable? (I have an old JvD leather anchor tab and have looked at Angel, Cavalier & Spigarelli)

How does the small/medium/large get measured? (If you have a platform tab that you know the size of, could you measure the height & width & post it? - it costs too much in time & petrol to visit my nearest store for something so cheap!)

Thanks