It is called a step deck and it works really well. The step is not supposed to sink at all though. Golden eagle and I believe ERL do this to their blocks, Benson does not. It is always a good idea to go back and re-torque the head studs on any motor with step deck or o-rings after a 1000 miles or so.
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Don't bother giving me "rep", I won't return it and I think it is stupid.
Gracie Barra Clearwater
Gyms in Clearwater, St. Pete and Port Richey
pm me if you are interested in trying a free class at any of the gyms.