LTSpice - troubles to increase the number of tubes to simulate!

[Ogrus]

Hey mates,

Well... starting a thread for this, since the search function turned up some helpless informations.

I'm trying to do some tube amp design/modeling, but having some troubles... so, now, let me ask something about LTSpice (that's the program that I'm using here)...

I have two library archives:
- one, called Tube_IM.lib, which has the Norman K.'s specs
- another, called Tube_IMb.lib, which has some updated infos of the specs of the first one

However, I don't have too many tubes to simulate, only the following ones:
5U4GB
5Y3GT
6DJ8
6L6GC
6SL7
6SN7
12AU7
12AX7
6550
EL34

D'you know how to add more tubes, some of which are present in the library files (but not all of them)? I'm looking specially for the more usual ones, like:
EF86
12AT7
12AY7
EL84
6V6

Cheers!

[BackwardsBoB]

Valves

There's a Fender amp example in the files that come with LTSpice (or there was).