You get anywhere Mike?? How far off??? Ive purchased a matched duet straight from Decware and had them 2 notches off from each other straight out of box.
I bought a couple bulk buys from Ukraine untested Im assuming and had 90% of them match perfect according to gauges on Decware amp.
I bought quite a few off Amazon in past that were tested with provided numbes and had most of them spot on but a couple off buy 1 or 2 notches.
I bought enough of them to rematch and get perfect pairs.

Ive not heard any unbalanced volume with the 6P15p's reading a notch or 2 off from each other.