Also, on the same thresholds, rolling 4d8 (average 18) is better than rolling 5d6 (average 17.5). So both the dice and the bonus damage need fixing.Here are two thing that stood out for me:
Lvl 18->19 High Limited dmg goes from a +21 Bonus to +9
Lvl 23->24 Brute Damage goes from +20 to +8