[WyTex]

Regarding the handle rivets, I think Zenith must have had some sort of custom machinery to bend the split rivets down into the wood after installation.  Or they might have been installed before the chassis shelf was inserted.  Either way, I couldn't see any way of using the recommended tool so I didn't bother with it.  Once I was able to use a long chisel and small hammer to bend the rivets down enough but there was still some play.  I ended up sealing the rivets from the bottom by filling the area with epoxy.  That held it down tight.

Sorry for the late reply Mike.  Life is in getting in the way of my radio hobby the last six months.  

Regards,
Paul