Someone had a date maybe 1970 ? something that Cat wanted ACMOC to stop at. But never been a real hard and fast thing from what I see. More that tractor guys generally are not that into fork lifts. On other sites where I know there is nothing stopping fork lift talk, information is still hard to get. Since most farmers only use them a few minutes at a time they put up with things they would fix on a tractor.
"i reject your reality and substitute my own" - adam savage. i suspect my final words maybe "well shit, that didnt work"
instead of perfection some times we just have to accept practicality