learned how to align

I actually found this Cloudy Nights thread on a barn door tracker a long time ago but only now just read it thoroughly... The original poster "corduroy" followed Seronik's BDT design but had some questions, one of which was on aligning the polar scope. User "evan9162" replied. Wow. The procedure described, using Live View on the camera, is amazing, simple, easy to do. It ensures co-axial alignment of the 'scope and the hinge. And, curiously, allows the finder scope to be anywhere on the tracker! I could move it back to the bottom plate if I want...