So I took out valve and added to the stack of stock (assumed) washers. Total stack measured 0.120. New fluid although I noticed the pump very dirty on inside. I wanted to see the change vs spend time on removing/cleaning, knowing it will probably come out for more adjustment later. I did the mod while not removing the pump or lines except for the "in" line that the valve was behind. I would have to say that the added shims made a slight but noticeable difference. My plan is to remove pump once more and possibly (pending on reaction of the people reading this) go up as far as 0.138/0.139 as the new shims measure about 0.018/0.019. My other plan might be to just add an inline filter to see if that slows the flow and helps to "pump it down".
