[Elecraft] 1N5711 diodes in directional coupler

[Indy]

These are used in the directional coupler of the K2, KPA, and KAT-100.  I have lost these to ESD more than once.  Several questions;

Gary says that 1N5711's give more accurate readings than lessor diodes such as the 1N4148... question; how much more accurate, and how critical is this accuracy?  Would the 1N4148 be more, less, or the same susceptability to ESD?

I don't have any 1n5711's in my stock, but I do have some very fine PIN diodes, labeled, MA 47 266.  Are these acceptable substitutes for 1N5711's?  Would they be more or less accurate in the directional coupler?  Would they be more or less susceptable to ESD damage?

Thank you!

Please "reply all" as I only get the digest and won't see your reply until tomorrow unless also sent to me directly!!!  If the PIN's are acceptable substitutes would like to install them today.

73,

Fred - kt5x
K2 # 700