12-21-2014, 11:00 PM
I can't speak for your model 43, but I've had trouble with rotor & stator plates touching on tuning capacitors in the past, causing the same symptoms you're describing. I tried to get an even gap on each side once they are in the closed condition, using a set of narrow width feeler gauges to check the spacing. In one case, I used a set of tiny jewelers files or some fine grit, stiff backed sandpaper to open the stubborn gap when there was corrosion causing the crackling.
Greg V.
West Bend, WI
Member WARCI.org