Forgot to ask when you were here... you're not bald or fat; SO, what's up with the username? Look forward to you passing back through!
IMO weight savings would be virtually nonexistent, and safety would be compromised. I think trying to save weight in fasteners by reducing their diameter or hollowing them out would be unwise.
I'm glad the numbers were helpful. You're welcome
Hijacking threads is a way of life here. :-)
Use Schrader. Does not matter to me. I would recommend against using gas station compressors though.
Hey, I just read a post from Simon on FB ....APPLZ should be up in a few days!