Many thanks to all that have replied.
I believe Lone Star has found the problem; my newly purchased ATD has mismatched parts. I will return it to the vendor and get the proper one for my Vincent. Thanks much Lone Star. Others may want to look at the information (above) you sent me.
The view of my timing chest is as I found it originally. It had a multitude of problems; the front exhaust spindle had come loose, damaging the case, front cam, follower & timed breather, many missing nuts, washers & spacers, spindles rotating in the case, missing bits from the exhaust valve lifting system and more.
All moving parts in the timing chest have been replaced with latest updated new parts, including replacing the aluminum idler with a steel one.
Hopefully I can go for a start up this spring.