How to upgrade the drag on a Shimano Tiagra 50W/50Wa to a 50WLRSA (Drag washer upgrade)

In this video I go over how to upgrade the drag in your Shimano Tiagra 50W or 50Wa so that it has the same arc as the Shimano Tiagra 50WLRSa. By doing this you achieve a steeper drag arc while retaining a smooth freespool, so you can the run 37kg line on your reel. PARTS NEEDED (can be ordered directly from Shimano): ZTT0040 pre load spring x 2 ZTT0041C inner pre load washer x 1 I do not do these upgrades for a job, I have made this video for people to be able to do this.