1275 ribcase

After reassembling  the mainshaft for the 1275 ribcase, I noticed
approx. .120 play between first gear and the mainshaft bearing. This
seems to compare with the other mainshaft I have. Is this normal? Also,
just to make sure, the manual doesn't show any spring used with the
single plunger in first gear, is this also correct. Lastly, does anyone
know of a supplier for the locktabs for the first motion shaft and
mainshaft?
Thanks!
Bill Mantz
Roanoke, Va.
1971 Midget
1959 Bugeye