This is from

Norm.
What I’ve done to solve the wiper problem was to drill thru the blade clip into the arm with a # 36 drill then tapped some 6-32 threads. Then drilled a 1/8" hole in the blade clip and screwed the blade clip to the arm.
Now I can go into Wally Marts and buy their "el-cheapo" blade for around $2. When you have to replace the blade, line the clip with the tapped drill hole and drill a 1/8" hole where it should be. Next thing you know, you are into a nice clean windshield when it rains and the heavy seas won't rip them off either.
That little nub that come with the original arm just ain’t got it. AnyWho it works for me.
Norm
Posted with Norm's blessingsSurface Interval
1975 28' Express, Single M360
Specs:
http://www.boatm8.com/my...amp;page=boats&arr=0