Rollmaster Timing set size?

[2QUIK6]

Should there be any indication to the undersize on the gears themselves for a Rollmaster Timing set, p/n CS7020 ?
According to their website, the p/n for a .004 undersize would be CS7020-004, which this set I have does not have on the box label. Gears are just stamped with "Rollmaster" and the timing keyways, any other way to tell for certain as this should be a .004 undersize/oversize whichever you want to call it for a tighter chain fit after line boring.
Thanks

 

[gnjack]

Sometimes, but not always there is a hand scribd number on the lower gear. It is usually just one number a 2, 5, 10 ect. I stamp the backside of both gears during the build. The gear sets I would get from TA always came stamped.