question about the bottle
it is not leaking from where the line is connected, its leaking from where that big *** nut is, where the line connects to
anyone know if there is sopposed to be a seal or gasket?
NOS style requires a teflon washer which makes the seal. You have to periodicly tighten them, and somtimes during refilling that nut slightly loosens.
NX,TNT,ZEX do not use a washer the bottle nipple has a spherical end which creates the seal.
Hopefully that helps.

