This isn't meant to sound like a Smart ass reply but why on earth is anyone still using a kisser button?

Seriously? If you have your peep set up correctly use the string on the same place on your nose and anchor consistent you already have 3 solid reference points, the 4th (a kisser button) is just something to get in the way, cause a distraction in your shot sequence and slow your bow down.
either you can see through your peep squarely or yuo can't, a kisser button does nothing to help that process.
A kisser button goes back to the days where guys shot compounds without a peep sight entirely and they needed that 3rd reference point to make sure the're head and eye were properly aligned with the string.

If a kisser button was of any help whatsoever accuracy wise you would see tournament archers using them..........I have never see a single one.

Time to take off the training wheels Try it without for a little while, I think you will see that you don't need it at all.

Just remember to do the other things the same each time and your form will become second nature. Anchor in the same spot, touch the string in the same spot and make sure you have your peep set properly........that's all you need.