Hi SRW - Looking at the fastest laps above, you've linked to the 60's version of Watkins Glen GP circuit and not the modern Boot. We've never raced the GPL cars on the modern layout.
As the race hasn't been run yet you might be able to fix it by just changing the track in the drop down rather than deleting the event and re-creating it (You'll be lucky to get a Grp C/Modern F1 car around the boot in 1M04s
- The DP's are in the 1:30's based on a test race I ran here last year)
This is the correct version:
https://www.simracing.org.uk/smf/index.php?topic=26812#event16072