After splitting my cases to check the crank/bottom end, I found that the crank will slide right into the case/crank bearing with little effort and will also slide right out as well. I am thinking that this is a sign of major wear on either the crank and or bearing or both?
One side may be an interference fit while the other is a slip fit--tight but can be pushed on by hand. I can't remember for sure, it has been a while since I serviced the crank. It may also be a matter of whether you're dealing with an OEM or aftermarket crank. If both sides slip, then you probably have a wear issue.