Have you tried doubling down on soft totals to see if some dealers don't know their own house rules? Couldn't hurt to try it every once and a while?
I read the printed rules for the casino I play at and it clearly states that you can surrender any hand except against a dealer 10 or A. But as it turns out, the rules were misleading; you're actually more than welcome to surrender against a 10 or A but of course if the dealer gets a blackjack you lose your whole bet. Couple this with the so-called wise advice from the last dealer I played against ("You know, you should never surrender - it's only to the house's advantage, why do you think they have that rule?". Um, ok.) and half the time I don't think they know what they're own rules are.