Rocker shaft hold downs

I Just Talked To Hughes Engines About Their Hold Downs. They Are Not Aware Of Having To Machine The Hold-downs. The Stock Stamp Rockers Are Marked Lft & Rt, Because They Don't Have Spacers To Alighn Them. If You Look At A Stock Rocker, The Push Rod Is Inline With The Valve Tip. This Is Why The Hughes Complete Rocker & Shaft Kits Come With Spacers & Shims. This Is Used To Alingn The Rocker. There Is No Offset From The Valve To The Push Rod.