Brewed an American Pale Ale today. After transferring to my 6.5 gal carboy and pitching yeast, I attempted to place a Thermowell into the carboy. It wouldn't stay snug into the neck so I applied some additional pressure. I push the darn thing into the carboy. I do have another stopper on a secondary fermenter that is hardly showing any signs of activity. Should I pull the stopper from the secondary and use it on the fresh batch? Any suggestions for the secondary until I get another stopper tomorrow?