I have recently purchased the Woodtek 26" dual drum sander and I am pretty satisfied with the results I am getting. I do have a question about set up, however. The leading drum (the drum the wood goes under first) is factory set and can't be adjusted. The trailing drum (i.e. the second drum) is adjustable. When the tool first arrived the second drum was out of line and had to be adjusted, which I did by trial and error. My question is should this second drum be set as close as possible to the position of the leading drum or should it be set a fraction, hair, tiny amount lower? I am currently running 100 grit on the leading drum and 120 on the trailing. Does anyone have any opinions or experience in this area. Any advice will be greatly appreciated.