[Elecraft] New Revision of KPA500 LPF TR Switching Rework Rev. E

[Roy Morris, Jr.]

I have an early KPA500, and it works flawlessly.  Is this mod recommended by Elecraft on ALL amplifiers that presently have Rev. D ?  This mod requires considerable disassembly, and I don't want to do it unless it is highly recommended.  Please state the specific reason for this mod.  Thanks.  Roy Morris  W4WFB