Thanks to the generous contributions of George, N3GH, and Jack, K6YC, I have collected and resized the needed schematics and merged them into complete manuals- one for the Zetron 38A and one for the Zetron 38Max.
I have already uploaded both manuals in full-page PDF to the Zetron folder in the Files section of the Repeater-Builder Group. The same manuals will soon be available in the Zetron section of the RBTIP. The schematics are in their correct locations within each manual, so you don't have to download them separately. 73, Eric Lemmon WB6FLY