Today I did 100 boards so it was a good test of the system, I did tweak the reflow time so that liquid stage was about roughly 20 seconds, and that worked perfectly, though I think I will slightly lower the peak temperature by about 20F. I also aluminum-foiled the door (except small window). First reflow was 63 boards since that was all I could fit on the rack, only had 2 fails do to parts going cockeyed but that was mostly because of an uneven spot on the rack, and I was happy to see pretty much all of the boards reflowed at the same time, showing that there is little in hotspots, the oven is getting warmed up pretty evenly. I do have a video which I am currently editing of that.