After viewing the Pat's Quick attach I think they will be fine as I've be using a Harbor Freight(China made) quick hitch on a 6 ft tiller and JD 709 cutter for several years with no problems. I also used HF QH on a Howse 8 ft cutter before I bought the JD 709.
Other options:
You could modify the cat 1 implements to clevis mounts so they had two hitch points:
View attachment 361085
Bruce
Yeah, I'm familiar with Pat's having owned a CAT I set. My concern is the lateral stress put on by the heavy cutter with it's COG at least 4' behind the pins. If Pat's has a weakness it would be the small bolts used to hold each one straight on the 3pt arm. Those same small bolts would have that lateral stress applied to them.
Now we're talking. This the perfect fix/modification.
I modified two CAT I attachments to fit CAT II QH using that method. Works great. I can use them with my CAT II tractor and my Brother can use them with his CAT I tractor. Both of us using QH's.
gwdixon, that's slick. Didn't know they offered those. That definitely solves that problem!!!
TxJim, that's what we are saying, modify the attachment with clevis brackets and you can pick it up with either kind of QH. And the modification can be done on a factory CAT I attachment or a factory CAT II attachment. Problem solved without any kind of hack job.
Modify the attachment with the pins, CAT I turned in, CAT II turned out and you get the same result.
It's just stronger to create clevis brackets.