I agree with EZ, above ^^; it sounds like a guitar being played rapidly with a pick. Just about the opposite of how I play (badly, slowly, with fingers...), so the sound I get, myself, is very different. I don't think I can help much, if at all, but I don't think you really have a problem, either. Play with whatever sounds you're getting, rather than analysing what's going on. In other words, if you have lemons, make lemonade.