[Elecraft] K1 Bandwidth Question

[J S]

I built a K1 in 2004 and sold it.  I'm thinking about building another
one, but the K1 I had did not go above about 7075 kHz on 40 meters.
I'd like the band coverage to be up to about 7120 kHz.  As I recall,
the only way to do that is to replace a capacitor, I think it was, but
at considerable compromise to selectivity.  The other question:  has a
KAF2 audio filter mod or something like it ever been considered for
the K1?

Jeff
K6ATT