Thank you Dave and Lynn, some great advice and pointers.  I shall check out the web forum you mention Dave.  
 
Lynn, thanks for the detailed advice, and I will certainly check out the dwell.  I would dearly like to find a jig so that I can set this up myself, last time it cost me £100 and lasted a short while.  
 
Basically, over here in the UK, there is much talk about the divers helmet being fault, and that this was down to a batch of bad rotors or distributor caps that had the incorrect mix  in the bakerlite which led to conductivity and tracking .  The tracking over works the coil, the rest is history.   One chap I know was in the Post War National Service and they went out in 12 T16s on a 20 mile drive.  They all broke down and had to be recovered to works.   Every T16 bar one I know about in the UK has suffered from this failure when hot.   The only one that I doesn't has the crab distributor fitted.     
 
The inside of my Distributor smells of burnt electrodes.   I was going to bit the bullet and fit a Mallory Alloy Billet dizzy but they stopped making them, so I am at a loss.  
 
What I had noticed is that the original rotor was very lose on the drive shaft with a great deal of slack on the square drive.   Do we think my high power coil could be at fault?   Plugs were set as per the book.   I will rebuilt it and try again, but i have lost confidence in these dizzies as I have heard so many bad things about them in T16
		 
		
		
		
		
		
		
		
		
			
			
			
			
				 
			
			
			
			
			
			
			
				
			
			
			
		 
	
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