[Tube Radio]

I have a Philco 118 cathedral that I recently restored and it works for the most part, but it does have an issue.

When aligning the radio the IF alignment and the RF alignment for the BC band went good.

The alignment for the SW band went good, but here's the problem.

As I tune lower on SW the frequency starts to be off.

Here's some measurements I just made.

Sig gen freq---Radio Dial
10.8MHz-------10.8MHz
10MHz---------10MHz----10.5MHz
9.5MHz--------9.3MHz----9.9MHz
9MHz----------9.3MHz----8.75MHz
8.5MHz--------8.75MHz---8.25MHz
8MHz----------7.75MHz---8.25MHz
7.5MHz--------7.25MHz---7.75MHz---7.6MHz
7MHz----------6.75MHz---7.25MHz---7.1MHz
6.5MHz--------6.75MHz---6.2MHz---6.6MHz
6MHz----------6.25MHz---5.7MHz---6.1MHz
5.5MHz--------5.71MHz---5.6MHz---5.15MHz
5MHz----------5.19MHz---5MHz

Any idea what could be causing that problem?

At first I thought it was the 3,000pF cap that is put in parallel with the trimmer cap for the oscillator low frequency which is adjusted on the BC band only, but putting a cap in parallel with it only shifted the frequency and I was left with the same problem.

EDIT:

Failed to mention earlier that the shadow meter coil is open (getting it rewound), but I did substitute a 1K resistor for it. Not sure if that would be causing the problem.