tighten the two retaining screws (M8)  (# 3.1) to 
					approx. 23 Nm.
					
					
					now, after disassembling the center, the "Flipper" can be 
					reassembled - the holder does just fine without this cut-off 
					guide bush.
					
					
					one more thing.
					
					
					the retaining bolt (# 20) for the center can usually only be 
					got in if the rear bolt of the exhaust manifold (and 
					therefore also the muffler) of the original exhaust manifold 
					system is removed and the manifold a bit pressed down.
					
					
					use a sturdy lever and use force to bend the manifold 
					downwards so far that you can now push the stop bolt (# 20) 
					in and then tighten the metal self-locking (s.s.) nut (21) 
					with approx. 25 Nm.
					
					
					(the "right" value cannot be found anywhere in the manual)
					
					
					however, if a 4-1 is installed, it is of course super easy - 
					"flipper" off, insert center with its two sleeves / bushes 
					and screw in the long bolt (# 14) and the center is ready 
					for use.
					
					
					the center´s springs are not needed in the workshop - so 
					everything is mega easy.
					
					
					 