Thank you all for your responses. I can tell that there are two "schools of thought" on this topic, one is 'Level the platter flat for the bearing', and other is 'Level across the stylus sweep' and that is where I have found differences in level readings. I do use an excellent 5" Empire spirit level as this provides the highest resolution of precision for what it is I am doing. I also appreciate advice on the digital level but I just don't trust these devices. I like the analog levels, no pun intended. I did find that on my Cardis Sweep/test LP that 'platter level' yielded supurb results, esp. no anti-skate issues. Thanks all. BR