I am going through an oldie but goodie FET ten/pc, and I changed all the electrolytic caps and I would like to upgrade the caps in the signal path. Has anyone changed these caps? I see four 10uf axial polyester caps as well as four 1uf axial caps in place, I dont have a schematic of this unit and I am wondering if these are all in the signal path. Any help is appreciated...THANKS!!