Well your just going through the growing pains of crossbpws!! As someone on here once said the best way to quite down your crossbow is a good set of ear plugs. Crossbows are noisey by design, thas alot of power in thoes little limbs. The more stuff you put on to absorb sound the less energy the arrow gets to absorb, which means less arrow speed. If your goal is to have a CB as quite as a compound it will never happen. If you take resposable shots, like less than thirty yards the the arrow will be in the ground before the deer hears it!