Not a lot of force. Just grease it up and make sure it's not cross threaded and you should be fine.

But if your other lockring works, just use that. Don't want to be responsible for you ruining your new hub. But I do have a MKE lockring on my orgin 8 velomine formula hubs. I have had 2 on there in fact.

On a side note. I did a super idiot move the other night. Was dark, in a garage, distracted. Went to rotafix a cog off and put the wrong side on (side that had a lockring). It moved. But took my idiot brain 2 times to realize that wasn't a normal feeling. Can't get the lockring off to see what happened to the threads. I'm sure its stripped. Broke both tips off my hozan tool (completely cracked off), and my pliers have some nasty marks. Can care less about that side of the hub to be honest, but want that cog off. Gonna take it to my lbs and see what they can do to get it off.