So I bought two used pinlock kegs from a local brewer. Claimed they were pressure tested. I took them apart to clean (including the posts and poppets). Anyway, I reassembled, kegged, and went to hook up and noticed there is a leak coming from the bottom of the gas “in” post. I thought it might be the o-ring on the diptube so I put a different one on and same issue. I noticed that the poppet doesn’t seem to fit right and when I take off the quick disconnect gas shoots out from the post immediately. Dont think this should happen. Wondering if the spring/poppet valve is bad? Would that make it leak from the bottom of the post? Thoughts?