500 volt ceramic, NPO and mica capacitors for SX100??

[wa2dtw]

It appears that I will have to replace some capacitors to get the SX100 to function properly on 75 meters.  They are: 
C53 - 10 mmf 10% NPO 500 volt ceramic
C54 - 220 mmf 5% N330 500 v ceramic
C55 - 240 mmf 5% 500v mica (the only one in the Allied catalogue)
C57 - 11 mmf +/- 0.25 mmf N1500 500 v ceramic
C68 - 1000 mmf 5% N2200 500v ceramic
C70 - 100 mmf 10% 500v
C71 1 mmf 10% N750 55v ceramic

Does anyone know how I can obtain these?  The Allied catalogue lists only one, appropriate for C55.  AES and Newark electronics do not list any of these.

Thanks and 73
Steve WA2DTW

[W1GFH]

http://www.justradios.com/mica.html

and

http://www.justradios.com/capacitors.html#product

I'd go with silver mica in place of the ceramic caps. Also, I wouldn't replace 'em unless they really needed replacing.

"Justradios.com" = fast, excellent service, BTW.

[WA2AAE]

I purchased some temperaure compensating caps when restoring my Hammarlund SP210 from Surplus Sales of Nebraska. If I remember correctly they were not very expensive.

73, Harvey