I am about to give my police record check form to my local police. Although the overall instructions say to mail all forms using the gray envelopes, the police check form has a seperate address listed on it. What should I give to the police with the form -- one of the gray envelopes, my own envelope, or should I expect my police department to use one of their own? I am not sure since the address listed on the form is different than that on the gray envelope. Thanks in advance.