Sorry for the delay in replying and thank you guys so much for your input. I’m very grateful this site exists! Well, after several beers and much thought about it, I called one of my customers who has a mobile welding service company. He came out and just welded the coupler sleeve to the blower shaft. That bastard will never move again. I hooked everything up and so far so good! That truck is back in business but I realize I may have issues down the road.