Re: tinkering with cabinetry and tabbing
I would trust the builder; if it is only tabbed on one side, that's likely enough. Is that tabbing starting to fail?
That other bulkhead is probably not tabbed because it is not structural; you might tab it into place this year and find you need to remove it next year (the Klammer/Franchen guide block adjustment fitting might be behind there). I'd leave it alone.
The red strands are probably the same as tracers in a halyard or sheet but in the FG mat material. Red probably means xx thickness, blue might mean yy thickness. That's just a guess.
Catalina 25 #2818
Tide goes in, tide goes out. Never a miscommunication. You canít explain that.