John ,try a washer or two on the bolt. while the nut is off check squareness of the clamp itself. IDK torque spec but, better help is on the way ... wait for it ...

--- On Mon, 12/12/11, John Lauterbach <jhlauterbach@BELLSOUTH.NET> wrote:

> From: John Lauterbach <jhlauterbach@BELLSOUTH.NET>
> Subject: Setting time timing - unexpectedly need help.
> To: vanagon@GERRY.VANAGON.COM
> Date: Monday, December 12, 2011, 3:34 PM
> I had hoped to turn this problem over
> to my mechanic, but when I called
> him this morning, he said was totally booked up for the
> remainder of the
> year.� Thus it setting the timing correctly is a must
> DIY.� I have done
> this many times before, but the usual is not working.
> 
> Distributor is tending to creep towards more advanced
> timing.� The clamp
> that supposedly holds the distributor in one spot may not
> be doing its
> job, or I am not tightening the bolt enough or something
> else.� One
> problem is getting a grip on the bolt head.� I am
> using a 10-mm socket
> with a 1/4-inch ratchet,
> 
> Would appreciate some step-by step instructions on moving
> the
> distributor to take the timing from around 10 degrees BTC
> to TDC.� I
> know this sounds dumb, would appreciate the help.� I
> have an electronic
> timing light.
> 
> John
>