[SignalOne] CW Filter/ Advice on cap replacement

[Ka9p--- via SignalOne]

Greetings to the group if anyone is still around and Happy New Year.
 
Couple of questions.
 
1) Anyone have a cw filter for sale, or a source, perhaps, or have made a  
ladder filter?  I would buy a parts radio to get one, if available.
 
2) My radio has bad hum on receive, note appears to be pure DC on transmit  
- is there possibly one or two likely cap suspects I could change without 
doing  an entire recap - which I will eventually do, but would like to be 
able to  listen comfortably.
 
Thanks!
 
Scott