If you continue having arch pain after a few skates, you can try this which helped with my arch pain in my True's:
https://www.youtube.com/watch?v=3KCsrDNuSis
M Reebok
HP CCM
30/35/70 made overseas
520/7000 Made in Canada
HP35 =520
HP45=RBZ
HPUCLP=U+Crazy Light
X models have waist zippers to add +1
C models use Ufoam
P models use PE inserts