Can anyone tell me what size wrench(es) are required to tighten the stuffing box on my 87 Hunter 28.5? The guy who sold it to me said he had used silicon when he replaced it on the hard, but I should loosen it to 4-5 drops per minute before launching her. I think I can figure out which nuts/sleeves to loosen but want to make sure I have the right wrenches to take with me. Any advice on this? As always, thanks for your help.