I didn't realize that there are 3 hitch pin options for the MX-8. Parts 30 & 31 allow it to be used with either a category 1 or 2 hitch. Parts 32 & 33 allow it to be used with category 1 only. These show up in the parts catalog only for the semi-mount, not the offset, however I know that the MX-8 I used on a 4710 several years ago was an offset type and one of these pin options must have been installed.