can anyone with any AUDIO electrical knowledge look at this file and recomend values for the few missing components as i am stuck in a middile of a build it is a jts preamp but moded for a valve output system however parts of the original components was destroyed and have black spray paint over them so its not possible to get a reading with a multimeter. the missing components are on the bass and mids settings which start roughly around c43 so can anyone please please help as it will be greatly appreciated thanks