I put mine back together the following way.
First I made a insert that fits, same diameter as bore but without interference fit, into the smaller bore behind the spiog bearing adapter bore in the back of the crank. It is 1/4" thick and threaded with 3/8 X 18 threads. I put in first with a little RTV to prevent it from turning later.
Then before I press in the bearing into the adapter I put a thin washer behind it that has a 3/8 hole in the center.
I then press the adapter into the crank. Heat crank with hair drier and place adapter into the freezer first.
When it all needs to come apart I simply pull out the entire assemble, adapter with bearing in it, with a long 3/8 bolt and puller by threading it into the the insert behind the adapter. The insert pulls out the adapter from behind as it comes out.
After the adapter is out, I get the bearing out of the adapter in one piece by pressing on the washer from behind to push out the bearing.
This works really well and nothing, including the bearing, gets dammaged.