Update.
Was able to get seized motor unseized and started. Did this using the coupler (without spider) and small pry bar. I was thankful to have it turn without applying much force. The motor has always been relatively difficult to start, and was consistent in this regard. Once started, it missed some at low rpm (I never run it low when in production), but ran well when throttled. Happy about this--haven't tested under load yet though. Compression is 75 and the new motor tests roughly the same. This is a big positive to me, but testing old motor under load, over time, will be the real test.
I'm undecided on what I'm going to do with the new motor. Purchasing a coupler that mates with the shaft would be good insurance for future splitter use case. But I'm unsure of what use cases I'm sacrificing by cutting down length of shaft? So I'm hesitant to do this until forced if splitter need arises. This is where I'm at.
Thanks to everyone that spent time helping research, determine/weigh options, and provide guidance. I learned from you all. Truly appreciated.
--Jared
