Does anyone know what size the packing nut and locking nut is on my 2005 Hunter 36 propeller shaft. Engine is a 3YM30G. Can't find it in specs and don't want to spend 34.00 for a 1 1/2 inch open wrench if it is too big or too small. Soft hose shows 1 3/4 inches in manual and nut looks the same but I don't know. Space too small for any type of pipe wrench. It leaks more than that which is allowable when underway and needs the 1/4 turn to tighten it. thank you.barrile