Matt is correct.
From my line of work, I have been to numerous service schools and the instructors tell ya how easy it is to take something apart. Of course their judgment is based upon working in a 70° Lab with new equipment. Working on a job site and after several years of use, is a WHOLE different situation.
Scott points out all the extras he does and that is commendable I do the same. BUT....the extras that Scott does was NOT done on the assembly line at the factory.
I would suggest, that the extras that Scott has pointed out, be done. You never know when something has to come apart for another reason. Easy serviceability just makes good sense to me.
I have learned a long time ago, that the design of a product was made by the Marketing Dept. The Marketing Dept tells the Engineers to make something to fit a certain price. I am sure we all have seen something and wondered if "they" would have spent another $.50 something would have been better. Just look at the L & G tractors of today. Now ya know.:biggrin2.gif:
The bottom line here is, there are a couple of different ways to get a drive shaft out depending upon the circumstances and the tools one has at hand.