I don't understand why STR rolls when using crowbar bash have critical failure set to occur on rolls as high as 10. IMO this makes using crowbars completely pointless - instead of just a risk.
I'd suggest making critical failure appear on natural 1 roll, as it occurs on attack rolls, only. The risk persists (because 1's appear more often than people think), but the crowbar's ability to open chests remains a viable option. It would be especially welcomed as there was a new feat that added a bonus to bash rolls.
