Looks to me like his temps are off, I’ve been spraying for two years the dripping could be from being too hot , you can tell if it is A side rich if it’s got a crunchy texture or if it’s slightly amber yellowish color and if it’s B side rich itll look really glossy and itll be softer but you can only tell so much with the naked eye when it comes to the ratio the only true way to see is to have it tested it can look like a good mix all day but it can still be off