Radio news aggregator sucks

Why is it that when I delete a few items in Radio’s news aggregator, a bunch of previously-deleted items suddenly appear and I have to spend a few minutes cleaning them out? What Radio needs is a ‘Check All’ option or something like that so I can uncheck the items I’m interested in reading later. When I get a chance, I’ll try installing myRadio and see if that helps. Anything has got to be better than the built-in aggregator, which is feature-poor.