[R-390] Two questions

[Keith Densmore]

I have a Imperial unit which I will be getting into shortly. It works well now, and the PTO is all re-aligned and stable.
I notice a couple of problems with it, and I wonder if anyone on the list has had these and/or has any thoughts. Forewarned is forearmed!
1/ Sensitivity drops noticably going from the wider mechanical  filters to the narrower ones. The level meters are out of it but its probably more than 10-15db from 16 to 2 kc. This is actual signal loss not just noise loss of a narrower filter.  Anything to look for?

2/Lower sensitivity on the 7 mcs band compared to all other nearby bands. Does not appear to be the band switch, it makes positive contact on all ranges.  I thought might be alignment of the  7-24 mcs crystal but it peaks nicely with its trimmer. Any thoughts?

Thanks All, 73,
Keith ve3ts