[Elecraft] KPA500 Mod Kit?

[Randy Farmer]

I had a chance for a nice visit with David Shoaf at the Elecraft booth 
at Ham-Com this weekend. In the course of the conversation, he mentioned 
the availability of a mod kit to change out Q5 on the LPF board to 
prevent PIN diode failure in the T/R switch. He highly recommended that 
this mod be done on a prophylactic basis. I've looked all over the 
Elecraft site and can't find anything that even mentions the existence 
of this kit, let alone a part number and ordering information. A web 
search turns up a couple of hits that have a part number, but the 
information is pretty old. Does anyone have any details on how this kit 
can be ordered?

73...
Randy, W8FN

P.S.: I really enjoyed David's talk, especially the info on building and 
testing the KPA1500