You need the Dynaplug racer pro version. It has 3 on the small plugs if you flip the tips around. I don't think silca is as good as advertised. I only trust the first step for real stuff, step 2 is fine for Saturday rides. No sealant has blown me away and silca is easiest to clean off the inside of the tire, so I'll stick with it for now.
You nailed what you should have done. New sealant for race day
Hindsight is always 20/20
You need the Dynaplug racer pro version. It has 3 on the small plugs if you flip the tips around. I don't think silca is as good as advertised. I only trust the first step for real stuff, step 2 is fine for Saturday rides. No sealant has blown me away and silca is easiest to clean off the inside of the tire, so I'll stick with it for now.
Just bad luck