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im looking at building a big muff clone using the plans from generalguitargadgets.com The list of materials has a 470pF Film Capacitor (Most likely have a marking of 471). All i can find is a 470pF Ceramic 50v capacitor (which has the 471 marking on it). Would this be ok to use instead of a film ca...

I want to pull the modules from a console and clean them up. Bsides compressed air what should I clean the PCB with, if anything at all? What about rubber/plastic knobs..dish soap? The "right stuff" to clean PCBs is Detergent 8, which is kinda pricey ($65/gal). It removes solder flux and other crud...