[AMRadio] Valiant PI network

[Lawrence Steeno]

Good morning, I have 3 Valiant transmitters here-one is mine- and two of them have some leaky caps in the PI network so I am thinking of replacing all caps in all three units. I am talking about C38, C39, C41, C42 (3 in 1). I have tried run of the mill ceramic caps but they heat up in no time so I need real RF caps. Any ideas where I may purchase some?
Thanks in advance.
Larry K9LWI