Without knowing for sure how far the conv will slide
into the crank area you wouldnt really be spacing
the conv back when using the washer... you have a total
distance of where the conv bottoms out on the pump
and where it bottoms out on the crank.. so if the
total distance is short then you either have to space
the trans back or change the nose of the conv so
you gain more space.. if that space is good then
you can leave the conv at the 1/8" from the flex..
hope you see what I'm trying to say about the total
distance