Thanks marcellus,
I bought 2 motherease covers from a most brilliant BB Marketplace Member!!
I am waiting on them to arrive and I'll see how much better we are going.
It's a bit of TMI...but DS was having a bit of gastro, and now that has settled it's much better with the prefolds.
I am going to pluck up courage and write to the maker of the prefold and cover and say that they need to improve the cover etc or else people will give up on them like i nearly did.

Anyway, thanks girls...things will only get better right?!