[mikethedruid]

Check the oscillator section of the tuning condenser to see if there are any shorts that happen at a certain point in the meshing. You can do this by hooking a multimeter set to ohms across the section, and very slowly tuning across the whole range. It should register 0 ohms across the whole range. If it does not, you will be able to find where the short is occurring and then carefully bend the condenser plates back into position so they don't short. while you are at it, check ALL the sections of the tuning condenser.