[Hallicrafters] Need temprature compensating capacitors!

[Jim Liles]

I am working on an SR-2000 VFO problem finding a temperature compensating tubular ceramic that intermittently shorts and changes value, stopping the oscillator or warping the frequency.  My eyes cannot see even with a jewelers glass what is wrong with this thing but it is absolutely foul.  While I am in this box, I plan to replace all, just for peace of mind.  The values are 39pf n150 500v, 47pf n30 500v, 82pf n80 500v.  Any ideas as to a source?  Thanks for any help --- Regards Jim K9AXN