[Elecraft] New K1 on the way - Band Module Questions

[Gary W. Marklund]

I should receive my new K1-2  with KAT1 tomorrow or Monday. I ordered 
40M and 30M for starters. I will add others shortly. My question is 
regarding modification for other bands. I've seen replacement parts 
lists for 12 and 10 M. Is there any reason the KFL1-4 is limited to 
40/30/20 and 17 or 15? What if I wanted to build a four band module as 
say, 30/17/12/10 meters? Is there something inherent in the KFL1-4 that 
prevents this?

Thanks,
Gary
KJ7RT