I tried a wheaten bread yesterday - plain flour, wholemeal flour, buttermilk, bicarb of soda & salt - anyway, firstly it seemed waaaaay to wet and sticky using the prescribed quantity of buttermilk so I'd to add more flour. Then had to increase cooking time by around 20 mins. Then the outside was as chewy as anything. Is it me? Is it the recipe? Should I have left it as wet as it was? Any ideas please?