In that case and if you're not happy I'd say bide your time, start listening to some other Zeds exhausts before ultimately getting yourself a new system.
You'll easily (imo) be able to sell yours on to recoup some of the cost and you'll be a lot happier once you find one that makes the noise you want.
Personally I've always loved the way the Motordyne system sounds....
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yea thats an idea im toying with atm .tbh the vid clip sounds not to dissimilar to what my decat/deresonated miltek sounds like now ..a bit to screamy .love the loudness but prefer a deeper note .it may grow on me but ill still be on the look out for something better