Hi Brian ,seasons greetings.
The thrust washers are machined to the same thickness as the gland plates and the end float is taken care of by using shims in the same basic way as with standard glands. Shims of course if required go between thrust washer and main bearing end face. Just as an aside, at the tender age of 20 I went to St Marys Row to pick up a bottom half that Matt had refurbished for me.We discussed some of the finer points particularly on crankshaft end float, and his instructions were quite simple minimum .015″, maximum .040″ provided everything rotated freely. My preference is .025″.
