I've been through this recently. I believe no matter which part number you order you'll end up with the same parts. There would've been a difference back in the day, but the "heavy duty" parts are - I assume - no longer made. Either that or the HD ones are the only ones made. Make sure you get the leading and trailing shoes in the right way around!
The spring part numbers don't have the R prefix, just the 6 digit number. I wouldn't bother replacing them unless you have a reason to.


 
						
					 
					
					 
				
				
				
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 Originally Posted by Dervish
 Originally Posted by Dervish
					

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