[Amps] 3-400Z snapped off grid pin!!

[Van K7VS]

I have a perfectly good 3-400Z that is missing one of the three grid pins 
(snapped off close to tube base ((about 3/8" still protruding)) that I was 
wondering if I can still use in my old Loudenboomer single ended grounded 
grid amplifier.  Any reason why it can't be used since all three grids are 
tied together internally in tube and all three grid pins go directly to 
ground on socket.

Van