[GreenKeys] Model 28 TD - LAXD part number (and/or manual) needed

[Nick England]

I started working on the LAXD1 climbing-head TD in my 28RT tonight -
the pins weren't centered in the tape holes so I adjusted the
eccentric that appears to adjust the sprocket drive in relation to the
pins. Uh-oh - as I was re-tightening the lock nut (gently, honest!),
the eccentric shaft broke. "Old & fragile" meets "old & clumsy", I
guess. Anyway, I do not have an LAXD parts diagram or adjustments
manual to get the part number of this eccentric. Can anyone help with
a parts diagram? anyone got an LAXD parts unit?

I have beaucoup manuals for the LXD and LBXD fixed head TD's but
nothing showing the climbing-head model.

A top-down view of the climbing head
http://www.navy-radio.com/tty/28rt/28rt-104.jpg
The lock nut in question is in the upper right of this photo
http://www.navy-radio.com/tty/28rt/28rt-110.jpg

many thanks,
Nick K4NYW