I took out my old 20 ball bearings top and bottom neck. I mic'ed the top at .996 ID & 2.095 OD. So far I havent got thehieght measured yet. The bottom is 1.064 ID and 2.095. Are these the measurments for the drop-in taperoll bearings? I was under the impression that the ID is the same on top and bottom. If anyone can measure a set for me I'd appreciate it, also I need the hieght of both bearings.