Have you replace the switch and plastic cam with the
updated parts?  This may  help.
                                          Eric

Robert Lilley wrote:

>I finally understood Bentley and how to adjust the throttle switch...
>
>I have been adjusting the switch opening gap from closed to open until the
>click and then measuring that gap and adjusting until I got the .002 to .004 gap.
>I have continuous had problems with the engine cutting out when cold over the
>past 5 years.  It would cut out for days then not cut out.  I have adjusted
>various parts, adjusted timing, etc. And sometimes it would go away for several
>months.  I put in a new switch thinking there was a problem wit the original,
>but have since put the original back in.  When you think you have solved it,
>it would resurface.
>
>When I was reading it for the umpteenth time, I finally understood it as it
>needs to click off at that gap WHEN CLOSING the throttle switch not when
>opening it.
>
>What that means is that you have the feeler gauge between the throttle stop
>and the adjusting screw and when you close the throttle it turns off WITH THE
>FEELER gauge in place.  I set mine to be .003.  At .004 it does not turn off.
>I had not had any problems with idling or cold cutoff.
>
>I had been doing it backward for a number of years.
>
>
>If you need more details let me know...
>
>Robert
>
>
>
>