Mmm, cake! 
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Cheers Rich.
I had subtracted .7v in my opamp calculation (TP1 is now 0 -4.3V ) to compensate for the loss so don’t know if that makes a difference on the distortion front.
Seem to remember one of Sam’s modules had a Zenner for this purpose ( may have been the QUAD VCA ) but was discusse djust leaving it out for the same conclusion (perhaps)
Cheers
Rob
Happy little cake 
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