[Radioroslyn]

I would use an ohm meter set on it's lowest range and measure across the stator section of the tuning capacitor to chassis ground. The antenna section of the stator can be measured from the grid cap of the 6A7. The osc side can be measured from pin 5 of the 6A7. This is if you don't have good access to the tuning cap. As you tune the cap from one end of the dial to the other on the bcb you should see 4-6 ohms (normal). If the see 0 ohms you've got the bent plate...

I'd check that 1st.