"I was testing some new equipment and have about 0.012 xpm sitting on my "balance". How do I request to withdraw this?
Thanks in advance!"

Fuish , give us more info about your equipment ( sofware  ,hardware) for help

1 xpm = 0.061 $

so you can left 0.012 xpm or you can  do more test


atm with 10.5.1 miner
rx 470 10,3 cpd = 14 xpm/day 0.85$/day
rx 480 12,5 cpd = 16,89 xpm/day 1$/day
rx 560 5,2 cpd  = 7 xpm/day 0.43$

1080 13cpd = 17 xpm/day 1$/day

r9 280     7,7cpd
r9 270(x) 5 cpd