thank you, I give up to install two riser.Here is a link to a key discussion. My keys are in post #8. I have been using this same prototype currently. Having the keys at a right angle gives me the ability to move the key with 2 fingers once inserted. Folds up like a pocket knife. I'm sure it could be made to look better.
https://www.st-owners.com/forums/showthread.php?148586-Cushion-for-Keys&highlight=