Wait till you try to get it back on...
Here's a wooden jig I threw together... slid the spring down over the
two screws and compressed the spring until I could fit the pinion
end of the shaft in front of the 2X2...

The computer I've posted all my pictures on, probably the first web
server in South Carolina, has passed on to that great bit-yard in the
sky... I've rehosted many of the pictures (I have them all) and edited
many of my VRCC posts so that the pictures aren't broken... I was looking
for this picture and noticed the "1500 wing final drive" post (5000+ hits) is broken,
I'll have to edit that one...
-Mike