Update README.md

README.md

@@ -9,7 +9,7 @@ This project documents work towards a custom sewing machine for experimenting wi
 <img src='img/sewing-machine-milling.jpg' height=250px>
 <img src='img/sew-ur.jpg' height=250px>
 
-The prototype uses some components available from Sailrite made for the Ultrafeed LS-1 machine.  Sailrite provides detailed exploded views of this machine in <a href='Sailrite Walking Foot Sewing Machine.pdf'>the manual</a> and sells components at <a href='http://www.sailrite.com/Sewing-Machines/Sailrite-Sewing-Machine-Parts'>their website</a>.  This prototype uses parts 9601, W172, 1232, 123100, 123011, 103273, 103274, 1603, and 102496.
+The prototype uses some components available from Sailrite made for the Ultrafeed LS-1 machine.  Sailrite provides detailed exploded views of this machine in <a href='Sailrite Walking Foot Sewing Machine.pdf'>the manual</a> and sells components at <a href='http://www.sailrite.com/Sewing-Machines/Sailrite-Sewing-Machine-Parts'>their website</a>.  This prototype uses parts 8511, 9601, W172, 1232, 123100, 123011, 103273, 103274, 1603, and 102496.
 
 It also uses two <a href='http://www.igus.eu/product/984'>Drylin-RJMP-01-06</a> from IGUS, an inexpensive self-lubricating linear bearing.