I just got done removing my old steering gear in preparation for installing my new PSC unit (model 841M). In comparing the two, I notice that the original steering gear has what looks like a small ball check valve in the input port where the power steering line attaches. The new PSC unit does not have any check valve in it. Has anybody else who has switched to a PSC unit noticed this? I can't see anyway to remove the valve and switch it over to the new unit, and I'm not even sure it is necessary or recommended. Anybody know or have any experience with this? I'm hoping I don't have to wait until Monday to call PSC before putting her back together.