I made my first order with Listermann's, a brew kit and 2 beer kits. Well my order should have arrived 2 days. contacted Dan at listermann's and apparently the package is MIA. Now I am not too upset, these kinds of things happen. But since I have 2 beer kits with the potential of sitting in a hot warehouse or in the back of a truck for 1 week+. Could I have problems with the ingredients, specifically the yeast?