[Elecraft] Driving an external amp with base K2

[Bill Allen]

I am trying to drive an external amp, 300W amp, with my base QRP K2.  The issue I am having is that during SSB mode transmissions, the amp's T/R switch often opens and closes between the sylables of some words.  Is there an adjustment I can make in the K2 to help lessen this?  Otherwise, it seems to working well.  Also, when working with such an amp with CW, should it be set for AM mode?

73,
Bill - WA5PB