Arrow spine help

[PigOPs]

I increased my draw weight today and realized tonight that it made my arrows underspined. I'm shooting a 70# bow at 30 DL. My arrows are 340 spined 31.5" long. Is there anything I can do to make them work? I have over a dozen. Would 85 grain tips and broadheads be too light? Any suggestions?

Thanks!

[SCORPION KING]

Drop your draw weight to the lower 60's

[oktx]

Cut the arrow shorter.