Hi Don, I've measure several standard 4" originals and they fall easily into that .200" to .220" range... I was thinking .225" for my standard blade, .250" for the next increment... and .300" for the tall, tall blade? If I made them sharp enough at the inverted "V" part, it would be relatively easy to slightly shorten any or all if situation demands?... For some reason, a lot of the custom barrels have needed a .250+ blade height to be on zero?..
..... keep the measurements coming guys... we're still straddling the fence on final dimensional decisions....
...GT