Just got my "beta" WP-34s overlay from Eric. A couple of observations if you haven't installed yours:
Keys: Use tweezers, or the tip of an X-acto knife, to install the key stickers. Holding the sticker by the bottom right corner worked best for me. It was easier to align and place the top part, then smooth down the bottom/face section.
Overlay: What worked for me was flipping the calculator so the LCD was at the bottom, then applying the label "bottom-to-top" (i.e. starting at the top key row and working towards the bottom). Carefully monitor the space between the overlay and the top of the keys - test each row of keys as stick down the label above the row (i.e. before you completely surround the key). If any don't "click" reset the overlay until it does.
I did the key stickers first, but it might have been better to do the overlay. I flexed the overlay a lot picking off the key labels, so perhaps peeling that off would save a little wear on it, and a make the key labels easier to pick up. Downside may be accidentally picking up some of the key stickers, though. Please post if you try this and it works better.
The overlay is a HUGE improvement - thank you Eric. Looks and works great. (And I'm no longer hitting the wrong arrow key when going through the function catalog!)
Bob
Edited: 10 June 2011, 5:38 a.m. after one or more responses were posted