I have been playing here since about October. Just here and there. I was playing a nightly tournament when I noticed the dealer slip chips from his sleeve into a pot of a player known to work there on occasion. I said something to the floor, but they didn't do anything. I ended up winning the tournament but it will be the last time I play there.
In the past I have noticed marked cards with pen marks, but I always just wiped them off. Can't control the players, however you can control your dealers.
I suggest find another place to play unless you want to be taken.