I agree that string leeches would help. One thing that worked for me was the Sims limbsavers. My bow is not a split limb, but I got the limbsavers for split limbs anyway. I put them on the short split part and tightened them so that they barely touch my cables. My bow didn't have much noise to start with, but with this configuration my bow is unbelieveably quiet! I checked my arrow speed with a chronograph after this setup and didn't lose any arrow speed. The only noticeable noise left on my bow after this was a little slap of the tubing on my peep sight. I got rid of the peep and tubing and now shoot a homemade back sight similar to the HINDSIGHT. Without the tubing slap, my bow is more quiet than I ever imagined a bow could be. I don't know if this setup is feasible for your Nova, but it might be worth a try. Let me know if you try it!