Somewhere in some forum thread in the last year there was a discussion about errors in current source circuits or current mirrors. IIRC there is a mod to circuit B that adds a resistor in series with one of the bases.

1. Is this in fact a known fix to reduce the effects of xxx (base current, temperature drift, whatever)?

2. Does the error effect or this correction have a name, like "adding the resistor reduces the Wolfgang effect".

Thanks.

ak