[Elecraft] K1 s/n2258 and new filter kit

[Curt]

Since completing this K1-4 nearly three years ago for 40,30,20,&15, have had 
a lot of fun using it at home and park bench portable.  Yesterday, after 
building a 2-band filter for 80 & 17M, made a few QSOs on those bands as 
well.  I've found the K1 a very useful QRP rig for my purposes.

Awhile ago, recall reading some chatter about Elecraft offering a filter 
board kit for 20,17,15&10 once the sunspots started coming back.  I suppose 
with all the K3 work the K1 is probably far down on priorities.  But, I for 
one would happily be first in line to order such a kit if offered. 
Alternately, has anyone successfully configured a 4-band filter for these 
bands on their own?

73, Curt KB5JO