You guys have probably noticed that I have a serious case of OCD. This has been bugging me on and off for the last few months.
One of my biggest pet peeves is seeing one of the second gen LF's with a cross-country style windshield (I do have one on one of my sleds

). Anyhow, when I look at Deere published photos I've noticed that there were two distinctly different "sport style" windshields. According to the part breakdowns, the windshields were the same from 80-84, but the o-rings did change part numbers. You can see the difference in the photos below (the back edge is rounded on the 83).
For the 83 season did they change the windshield slightly and keep the original part number? I was also wondering if the 83 and 84 sleds use the middle tab and what is different about the o-rings / mounting? The parts list shows part numbers N117052 for -190,000 and M69274 for 190,000-