Jeff judging by the Dominator steering and reverse set up likley as not that the ID at the mouth of the droop (OD of the steering where the teflon seal is) may be larger by nearly 1/8 inch ,meaning its Dominator specific ,when a Berk/AT/Agg nozzle or late Place diverter is used they may fit very loosley and leak .There are a few simple fixes for this however Tom
BTW Some very early Place units were made for the larger outlet style droop and Nozzle hsg style and conversley wont fit into Berk openings