I called Jo Sharp’s studio and spoke to a lovely woman called Wendy. She went and found a ball of the same dyelot and is about to knit it up but she was pulling it out while on the phone to me and said it seems much thicker and more uneven than it should be just looking at it. I feel less crazy now! Unfortunately the dyelot I have is the only one they have in the warehouse so if it is defective I will have to either change colours or hunt down a store with old stock. But they are going to help me do that which is wonderful. Yay for great customer service!