Good Evening, I am a new owner of a used B1750. I have a 60” belly mower currently on and also have a 3pt hitch with draw bar. I was wondering if anyone could give me advise on how to pin or lockout the height of the mower deck so I can isolate the 3 pt hitch operation. I am having an issue of the castor wheels digging in while lowering the 3 pt and would like to keep it in the highest position. I have looked under the mower and don’t see a pin location or how to do it. Thanks for your help.