Hi, I am building the FS 14 from Bateau. I'm currently using the West System standard epoxy resin and the slow hardner. I'm almost to the end of a can of the slow hardner and I am very frugal with my materials. That said, I am betting that I am going to run out of the hardner but I have a fresh can of fast hardner ready to go. Will the world come to an end if I mix a batch using the correct ratio of hardner and resin but mix the slow and fast in the batch?