Kinda sounds like someone wanted to increase the lash a tad and stuck a piece of paper under something. My memories of the guts of the lot 4 apron gearing doesn't include anything like that though, but then again my memory seems to be fading
Also, something of note. When I took the straight toothed piece off the bed that advances the apron/saddle, there was a paper under it marked 1917 with a typewriter. Maybe this along with my serial number will help sort out dates for these things.?
