Tipping at Underground Poker Clubs - Line Check

[jackdaniels]

So I play for fun and profit at a local 4-8 (limit) club and have noticed that I am one of the VERY few that tip the dealer only $1 when I win a pot. If the pot is REALLY big (above 20BB) I will toss in $2 for the dealer. All the other players tip anywhere from $3-$20 when they win a pot. Since this isn't a casino I am pretty sure these dealers work for tips, but with the vig being what it is ($4-$5 rake per pot and $1 to high hand jackpot) I am pretty sure it would be too hard to turn a profit if I were to tip like the other players do.

Am I being a nit here and should tip more or am I doing the right thing?

TIA