WP-34S keyboard overlays wearing out?

[jebem]

(03-29-2014 11:24 AM)Sanjeev Visvanatha Wrote:  On one of my 34s, the key labels have been lifting from a few keys since they were applied. I had to inject a small dab of white glue under the label and apply light pressure. Some glue leaked out, requiring some minor cleaning.

Thanks for your input, Sanjeev!
It makes me wonder if the original glue was defective, or maybe one needs to do a real deep cleaning of the keyboard before applying the stickers?

I just found this interesting video from HHC 2011, where Eric Rechlin explains the design process, the materials options, and details of the final product.
Pity that the video recording was stopped just before Eric could show us the last part of his demonstration on how to apply the overlay on the HP-30B:
"HHC 2011: Making HP Calculator Overlays"
https://www.youtube.com/watch?v=dUlO9btnFpo