I have several of the original shipment and they were all acceptable sharpness. I did remove the window from two of them. After great difficulty taking those two apart and putting them back together they are significantly sharper...I still find the pre-windowless ones acceptable though.
I also have to say, these cabooses are absolutely the worst when it comes to disassembling them. One screw is almost totally under a truck and there is a wire that is too short to remove the shell when you do get the screw out. I removed the wire from it's connection by knocking out a side window and reaching in. I glued the window back and extended the length of the wire prior to reassembly.
