I haven't read anyone else's, but what I did to mine was I took some tac it over and over and thinned it with water by 50%. I brushed a light coating on the back of it and let it dry over night. Works like a dream.
The same formula 50% water 50% tac it over and over and use it to resurface my cricut and silhouette mats. Works like a dream VERY VERY cheap too.
I have actually removed a bunch of my stamps from the blocks by heating them slowly then placing the plastic picture image from the wood block onto the back of the foam. Then I coat it with the tack it over mixture and its great. There is a video on Youtube that I found a lady who did this and its fantastic. I do recommend the 50% water in the glue though otherwise it's hard to peel back off and could rip the foam up.
Here is a video, it's not the one that I originally saw, but it's the same technique except she uses full strength. I wouldn't recommend that as it gets really hard to pull off of the block sometimes. I hope this helps
https://www.youtube.com/watch?v=8TjUU1HdBo4