Err I don't know hun, I've only ever made it with the wheatbran, it probably needs that extra bran amount. You can get it in H&B quite cheap.
I have always found mine quite springy, I leave it to cool for a couple of hours and then slice in half. Sometimes if you don't take it out of the tub quick enough it sweats a bit at the bottom. If you are using one of the chinese tubs that we get takeway in (used to LOL) I would put a piece of greaseproof in the bottom. I now have a very small silicon loaf tin that I got in the Range. Its excellent for this purpose. I quite often add herbs to my loaves too, rosemary and thyme, garlic and basil to name but two combinations.