32767 is used as a magic number in a lot of damage-agnostic recipes, even in vanilla minecraft. That's how you can craft a crafting table with any type of wood.
I don't see the Storage Bus fix in the changelog, not that it matters since you've coded against an unstable version of AE2 which no pack would use. *grumble grumble*
I really wish that AE2 supported such magic numbers, it doesn't find any matching items, and the GUI's all throw a fit if I try to pass in an item with that meta. I may have to turn to the OreDict to get this to work.
Also, I had assumed you were running the most recent version of ThE. There have been many, many, fixes related to the AE network code in version 0.9 and up. If your running something older than 0.9 there may not be a way to work around the storage bus issue. Which I did fix in 1.0 just failed to mention it in the changelog.
Edit: Yeah, the OreDict had just what I needed, doing some testing then I'll push out the build.