This machine is old enough that I dont think it has setting 133 on it.
I dont recall the paramter #, but in order to get it to tap at all, i did have to change the rigid tap parameter from a 1 to a 0 i think. Before changing the parameter it would just sit there on the G84 line with the spindle turning and Z axis wouldnt move at all. What enabling code are you talking about?
I talked to a Haas tech on the phone and he said to check the belt between the tach and the spindle to see if its loose or worn. I took the hood off of the spindle and motor and cant seem to find the tach or belt he was talking about. (starting to wonder if this machine actually has rigid tapping)
The first lot of parts i tapped were 3/8-16 threads in 6061. It ran fine but 25% of the parts had chewed up threads. I set up on some 1/4-28 thread parts made of 1020 steel and tapping only .5" depth. The first part tapped like a dream and the second one broke the tap half way into the part. The problem is without a doubt the syncronization between the spindle and z axis.