this is how i put a sleeve hitch on itBeautiful work, from another 1512 owner.
I didn't see these posts when you originally put them up. I'm not sure if 1512's could be different. When I bought my 1512 used in 1996, I was told that the only way to use sleeve-hitch attachments left-over from his 1450 was to add a Cat-0 three-point hitch and one of the triangular adapters to use those implements. That is exactly what I did. If I remember correctly, it was due to the location of the fuel tank. I'm not sure if I was given bad information or if they changed specifications in different years. Either way, I'm very happy I did what I did. Probably a little more expensive to do, considering I had all the pieces that would have been necessary to use the hitch the way you did. My 1512 is a workhorse and shows its age and wear.