Initial Function Test of a Howard Model 450A Receiver

I bought this set yesterday from a friend who had recapped it some time ago, so I thought I would give it a power-up and function test in is 'as arrived' condition. All controls are functioning as they should, although the tuning gang has some issues (crackly) over parts of its travel, and the set appears to be very 'deaf' on the upper bands. That said, I have not studied the schematic or any other literature yet. After I made this video I realized that I had to switch the IF (manually) when using Bands E and F(!), however, I could still not receive any stations on Bands E and F, though I could receive WWV on 10MHz on Band D (mid-morning in Victoria, BC, Canada in early-March) . Also, there appears to be separate antenna connections for different bands, so that may be part of the issue. I plan on giving this receiver a thorough 'going over' at some point in the next few months (earlier if I can find the time), so hopefully, I should be able to resolve things and have this beautiful vintage art-deco set perform as it did in 1938.