I was in Vegas last week playing at El Cortez and re heat I really believe it depends on who's in the pits. At one session I started at SD, the table got filled up with other players, so I went to DD and proceeded to get run over for 65 units. (I'm a red chipper btw.) I went back to SD, one other player there, and made it all back very quickly, spreading 1-8 with NO heat. (FYI the people in the pits I had never seen before.) Another day with different floor personnel they seemed to be watching much more closely. And different dealers call out checks play at different levels, some with an increase of 4 units, others not at all. I guess my point is one should just stay alert to what the floor is doing.