i have this leak from the top of this unit  the rusty looking bolt/plug  I  put a bit of jb weld on the top but that didnt fix it    I cant remove the top section with the 3 nuts as one goes round and round  and wont undo     Any ideas?
	
		
			
		
		
	
				
			Those 3 nuts should be on through bolts that run the full width of the stacks.
The plugs may need a sealing ring or o-ring
Those 3 nuts should be on through bolts that run the full width of the stacks.
The plugs may need a sealing ring or
cheers mate I wondered if there was a nut on the bottom and then it was pouringThe "plug" should unscrew from the block. Most of the time the through bolts have nuts on both ends. If you loosen a through bolt you can blow out the o-rings that seal between the sections.