My 62 Rude 10hp has been successfully resurrected with very little cussin', thrown tools, or hollerin'. Found great advice throughout this site that really helped. Last but not least, I would like to have a visible tell tale. A visual comfort, so to speak. I'm ready to drill, tap, and screw.....BUT WAIT!! Do I have to plug the 2 holes on the shaft where the water presently flows from? If so, would JB Weld do the trick?