I use a couple of Nikon FE/MD-11 combos, and notice that sometimes part of frame 35 will get "smashed" into frame 36, with 35 and 36 being the last two shots taken. I start at frame 0, and so these would be the 36th and 37th shots on the roll. On a 4x6 print, about a half inch or so of each of these frames will show an adjacent double exposure effect (error). On my last b&w roll, the two best shots (frames 35 and 36) were ruined because of this. I gather the problem stems from the there being not enough film left on the roll for that last frame. I find this puzzling, as I often hear of folks getting 37 and 38 frames out of a roll of 36. Ken Rockwell is always saying how he gets 38--and even 39!--"perfect" exposures by shooting the leader and perhaps one extra at the end. How is it that I often cannot get 37? Is it the MD-11 that is the problem? I welcome any comments.