Multiskin Nonsense

Ran into even more bother involving Multiskins earlier when I was testing out a new texture for the sawed-off shotgun.
Normally there should be two textures for each weapon, one for the pickup view and the other for the player view, with a Multiskin slot attributed to each view texture. This usually works out alright, but with the sawed-off it seems the two view textures are occupying the same slot, despite half the other entries being vacant. Basically, it means that I can either have my gun look like this in pickup view:
And this in the player's view:
Or the alternative, which is use the item's playerview texture and have the gun look like this:
It doesn't seem possible to seperate the two accordingly. Anyone know where I'm going wrong?
Normally there should be two textures for each weapon, one for the pickup view and the other for the player view, with a Multiskin slot attributed to each view texture. This usually works out alright, but with the sawed-off it seems the two view textures are occupying the same slot, despite half the other entries being vacant. Basically, it means that I can either have my gun look like this in pickup view:

And this in the player's view:

Or the alternative, which is use the item's playerview texture and have the gun look like this:


It doesn't seem possible to seperate the two accordingly. Anyone know where I'm going wrong?