You might try to raise your brace hieght to the upper end of recommended hieght.Maybe 7.5 on the 58 inch bow?I have only had 60" and 62 inchers.I braced them 7.5 to 7.75.
A bow quiver might help.I liked a an all rubber selway slide on of all the different ones I tried on my Centaur's.
Some folks dont like em for thier looks.But limbsavers will make any bow quieter placed 3 inches above the fadeouts of the riser.When all else fails to please your ears.
All my Centaurs were pretty quiet.The all glass has a more muted tone IMO than the chimera,double or tripple carbon.