Overall, happy customer. That said, besides the never easy shaft coupler removal, the PSS presented difficulties of its own. The stern tube end of the bellows came fitted with an insert. Trying to fit the bellows on the stern tube with the insert present felt impossible. After a struggle, I realized the insert could be removed and installed first and the followed by the bellows proper (light soap and water still needed). Instructions on this (nothing on YT or website) would have saved me some time. Neighbor in the boat yard was installing one for the first time and I was able to share my new found wisdom with him. The other issue was a slipping hose clamp. One clamp wanted to slip off the stern tube when tightened. Customer service told me to clean clamp and bellows as the clamp may have arrived oily. Appears okay now. This review is for a service kit install. Cheers.