Got under boat and noticed my prop shaft was way off center to shaft log:

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This is probably common knowledge, but do I need to disconnect the shaft seal (I've got PSS) from log before going through the trouble of realigning everything else? I've already disconnected the 4 bolts from the couplings, but the prop shaft doesn't seem to want to move very easily and I did not want to break anything. I've found tons on info on aligning the prop shaft at the couplings (thanks Moomba Forum), but nothing on the shaft log. Thanks,