i have a 1997 volvo penta 3.0GS. Ser # 4110143168, out drive is a volvo penta cobra sx ser.# 4112028714. I recently got this boat and have been going through it checking things over. I went to check the oil in the outdrive and there is no dip stick on the screw..........I was wondering how long it is?? also could it be in the outdrive? is it safe to take that cover off and look inside, not sure if things will fall apart if i take it off.....thank you