Ah, interesting because when SETTING a trap, if your INT is higher than 290 it treats it as 290. Explicitly. Apparently this was part of the standard Booby Trap when I created it, and at some point I decided to remove that restriction, so remmed it out. But it's not remmed out in the trap setting portion. I'll make it so, now. That's a super obscure oversight bug! You had only a 1 in 30 chance of detecting it with your INT being what it was, and no chance of ever detecting it if your INT was less than 300. Thank you!