really really tight!
Sorry, i probably should not contribute since i have nothing intelligent to say.
all i know is that to get them off my rattlegun doesn't have enough power, even at 150 psi (which is 50% more than it's rated psi)
I end up using a breaker bar with a 4 foot cheater on the end so i can jump up and down on it.
Quis custodiet ipsos custodes (who will watch the watchmen?)