Thanks all for the responses.
I know about the oring bit as well have watched the videos on yt about the insider. I thought as much about the oring, although I dont know why the insider would not fit with the oring in the boro. Will give it another go tonight and report back.
	
		
			
		
		
	
				
			I know about the oring bit as well have watched the videos on yt about the insider. I thought as much about the oring, although I dont know why the insider would not fit with the oring in the boro. Will give it another go tonight and report back.
						
					
				
 
	
			








	





