best way to hand-match them in the store is just to try to get them close in dB. I hand-matched mine and one is about 2dB off the other - i did this by setting them up directly on top of each other, plugging them into a mackie mixer, setting the trim the same on both channels, and then running the output into a tascam hd recorder. i then had the salesman play a cd in the sound room and i swapped mics out until i had the closest two. i would swap the mics position for each pair, but this didin't change the dB levels at all. they only had about 12 mics there, and i basically only swapped out the top mic the whole time.
if i had spent more time there, i may have gotten a better match, but what i do is when i first xfer a tape, as long as it's not really hot, i just boost the lower channel by 2.09 dB before i start tracking it.
there was one mic closer than mine in db but it had a real tight XLR jack. the other mics were sometimes 4-5 dB off.