Hi Mick,
I think Gunner mentioned you when I saw him the other day. Is the rifle you mention new? I have a CZ American which isn't adjustable, but can be fitted with a trigger kit. The parts are supplied with three options on pull weight and creep adjustment. this is done by selecting one of three different springs (pull weight) and one of three spacers (creep adjustment). I hope this helps, but I don't know if the 2E is a very old version, or just a number I don't recognise.
I'm local to both you and Gunner, so feel free to P.M. me if you want to take a look inside mine, to see if they are the same.
ATB,
Mark.