I linked to version 1.1 of Tom's Lee's PDF by mistake in my previous post above.

Here is the link to version 2.0. In the version 2.0 PDF, the discrepancy in the schematic appears in Figure 11 on page 18. And once again, here is the auction schematic. When comparing the two schematics, note the area of Q4 (2N4401), located toward the bottom of the schematics.

Any thoughts on this, Tom?