Hey,
And here was me thinking I had seen the simple solutions.
I had not thought of that but that is a "Collin Chapman" type of simple genius that I had not thought of but, if you are ok with it, will use.
It will have to be wide enough to allow access to the head bolts but yes, it will make the design much more seviceable.
There is a way to not have to disconnect the drive as well by simply making an unscrewable front end that allows you to remove the active section of the shaft but leaving the timed up end in a carrier of a sort.
I have to say though that as simple an idea as this is, I would be honiured to implement it if that is OK?
Brilliantly simple and simply brilliant.