[Marco Tahtaras]

Yes, you need something to insure the shoes are centered. The problem with many "centering tools" is they will only get you close at best unless luck is on your side. I'm sure the odds are a little better than the lottery. For any centering tool to be totally effective it must be accurately adjustable to match the diameter of the particular drum being used on each location. Ford's original KRW centering tool was effective because in those days all drums were standard @ 11" so a non-adjustable tool setup for 11" was all that was needed. If your drum measures 11.025" then the centering tool needs to be set to the same. Most folks just don't understand that.