Correction:  At the AHRMA Barber race I saw Len Fitch, the owner of the bikes I raced at St. Eustache Sept. 7&8.  He informed me that the bike I raced in Sunday's final Vintage GP was a TZ 350D, not a 250 as I thought he had told me.  This makes more sense, as I wonder why an older TZ 250 would have motor on a later RS 250 Honda.  I will now edit the St. Eustache report.
Barber (and Daytona report to come).