Blackburn Mammoth pump won't pump Presta, wtf!

[ProjectDan35]

Hey guys,

Before you ask, YES, I switched the head around inside so it fits Presta.

My problem is, I unscrew the little lock cap on the end of the presta all the way, but the pump won't go all the way on, it depresses the plunger before I am able to lock the head on, so all the air ( and sealant on my face ) comes out.

It's a Mammoth Frame pump.

It's almost like the head needs to be longer so more of the valve can go into the pump before locking on.

Anyone else have this problem?

[ProjectDan35]

Crap.

Nevermind.

There's more then one piece to flip around in the head.

Stupid me, I have to stop posting questions before I solve the problem!