I just got a hudy bench too but I have not open it up yet. I got a break in bench becasue I don't want to wear out the car for 7-8 tanks just to break in the engine. (I hate working on cars)
I used to break in engine on my car
1) idle one tank
2)run fat around the track for 3 tanks
3) vari the throttle while driving for 3 tanks (At WOT, the car does not speed up too much)
4) begin to lean it a little at a time
Let the engine cool off completely btwn runs.
The questions is do I need to vari the throttle while it is on bench? If so, How? keep adj the cab by hand?