[Raleigh]

When I align my 1941 table sets I put the chassis and the cabinet back to back and connect the wires to the loop with the loop still mounted in the cabinet. I can get to the trimmers that way, so I don't need to reach inside the cabinet. When I reinstall the chassis, the dial alignment does change a very little.

That technique might be harder with a console, but you can figure out a way. I did it with my 41-280 by putting a tall stool behind the console. I put the chassis on that stool, right behind the console, so I could connect the wires from the loop. The dial alignment ended up very close.

I don't know if in your set the dial glass comes out with the cabinet, but I think it probably does. On those sets with the glass mounted on the cabinet, I put the chassis in the cabinet and slide the pointer to the low frequency mark with the tuning condenser closed. Then I use the tuner knob to set the pointer at the reference frequencies and mark the position of the pointer with a sharpie on the back of plate the pointer slides on. That way I can put the pointer pretty close to the correct frequencies with the chassis out before I turn the trimmers.

By the way, I never had any real difficulty with weird noises and images with my 1941 sets on a long wire test antenna, but the 40-150 has a more complicated loop that might explain it. I was at my wits end and finally decided to give up and live with the noises and images, but when I put the chassis back in the cabinet with the loop connected properly, they all went away. They were all caused by my long wire test antenna.