[Johnson] Valiant PI net capacitors

[Lawrence Steeno]

Good morning, I have 3 Valiant 1 transmitters here and 2 have leaky or shorted caps in the pi network so I would like to replace them in all 3 units. Only one of the Valiants is mine. I am talking about C38, C39, C41, and all 3 sections of C42. I have been looking all over and cannot seem to find RF capable caps that will handle the power of this unit. I have tried the run of the mill ceramic caps but they heat up in no time flat. Any ideas where they can be purchased?
Thanks in advance.
Larry K9LWI