This. There are very few components that are 'crucial' to the sound of a pedal - certain opamps (e.g. LM308 for RATs etc...)are sought after for their characteristics, often the same characteristics that made them obsolete in the first place (slew rate, noise etc...) and all the gunk about germanium transistors is a moot point, as they tend to be so leaky and susceptible to external factors (temperature variations etc) that it's a real crap shoot, and trying to build two identical devices with these components is like chasing smoke.