Might be worth contacting Cornish Jack, he talks about a Mk1 Worden in this thread
**LINK**
I have a Mk3 and also a 'spare' set of drawings PM me if you want them.
I don't understand why the table pivot point was moved from front to back, I have often thought of making a new table and reverting to a front pivot as, with the rear pivot, the wheel is moved off center as the table angle changes.
I haven't bothered yet as I am busy building a Quorn 
CB