Got the head back from 'mansfield engines'.
They did all marvel of things 

 , heli coiled it , re-seated the valves, did some 'drop test' ( the last tjme I did that it broke some fins off 

 ), I was totally glazed over by now and my lack of knowledge had already left the building 
 
I did get that they had welded up the ends (much needed) and due to valves being 'topped'?
and re ground, logging all the shim thicknesses etc was a waste of time?
I think I'll be studying the chrisu's 'shimming sticky' when the time comes and i'll also be a permanent thread starter in 'bike help' section 
  
 

the ends wanted some serious grinding/attention, fortunately the end caps cover most of it.
a bit more 'sanding' will be required to give it a better shape:| 
well the engine is definitely getting a thick coat of silver paint  
 


 
			
									
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freddyz1r
PUM 329