I purchased a new 100lb heavy bag (TKO brand) This son of a bitch is harder than shit. My wrists are sore as hell! Is this good? I am using good 16oz training gloves (ringside) in addition to wrapping my hands and wrists.Is this something that I will just have to get used to over time or what. I dont think it is my wrap job but maybe just the new bag. Any ideas?