I have a 5 gallon brewer's best kit in the secondary right now. I want to take samples for 3 days straight to see that fermentation has stopped and that FG has been reached, but I am unsure whether or not I should return the samples to the fermenter. I would prefer to not risk the infection by returning the samples, but I am afraid if I remove too much beer this will throw off the priming sugar calculations that the kit did based on 5 gallons and cause my bottles to be over carbonated. I use a wine thief by the way. Any thoughts?