Typically where do you mount the shaft zinc? I've heard its best to mount a few inches from the strut although mine were 36" up the shaft from the strut. Also I heard it was important to tap the zinc with a hammer to get a good connection? Do you do that for the zincs on the trim tabs as well? I only have zzincs on shaft (1), trim tabs (8) and the large one on back of hull. What's the best way to paint inside the exhaust since I can't reach but about 3 ft inside? Should I tape a paint brush to a stick or is there a better way? I am cleaning running gear to put propspeed on and some additional bottom paint, zincs, and strainers.