I think that knob screws through a threaded wall and then onto a plate that bears against the post. Maybe that plate fell to the bottom and you need to get it out with a magnet on a stick. I could be wrong about all that but on my 82, there’s a plate for the screw to push against. 
Steven Brower

BPL R & D
Brooklyn Navy Yard
63 Flushing Avenue
Building 280, Suite 521
Brooklyn, NY 11205
(347) 223-8877
brower@browerpropulsionlab.com
browerproplab.com

> On Sep 24, 2024, at 11:04 AM, Jim Arnott <jrasite@eoni.com> wrote:
> 
> From the archives:
> 
> From: "ddbjorkman@verizon.net" <ddbjorkman@VERIZON.NET>
> Subject: Rear table knob
> Date: September 21, 2024 at 9:22:34 AM PDT
> 
> 
> Hello all.The Westy has been running quite well recently.  Even no problems on our 8.8K mile trip around the country.  So the list hasn't heard from mem, other than the occasional reply.  But now I have a problem.  The rear table knob does not restrict movement of the table as it should.  I tried using the (different design) knob from the front table, and even purchased a new knob to no avail.  Screw it down tight as one can and the table still swings freely.  I have looked into the top hole it goes into with the table removed, so know there is something in there.
> Anybody got any fixes for this problem?  I have bungie corded the table to the hand strap for now, but it's a poor solution.
> Dave B.The Boston one
> 
> 
>> On Sep 24, 2024, at 7:27 AM, Jim Arnott <jrasite@EONI.COM> wrote:
>> 
>> Saw the post. Don’t have an answer.
>> 
>> Jim
>> 
>> 
>> 
>>>> On Sep 23, 2024, at 6:07 AM, ddbjorkman@verizon.net <ddbjorkman@VERIZON.NET> wrote:
>>> 
>>> I hope you all got my post on the rear table knob problem.
>>> I am a bit surprised that no one has replied or run into this problem, nor come up with a fix.
>>> Any ideas??  It is kind of a PITA, and I could use some help.
>>> Dave B.the Boston one