well I dont know what you are doing, but I can honestly say that I have a 90% success rate on crafts 5 levels higher than myself and close to 100% on things below my level unless I go for HQ and am spamming bold more than is necessary. Alot of people can level from jut spamming the enter key doing standard, and if 10 levels below your getting 50% fail rate, then gaining levels would be close to impossible