For me THIS would be an issue. I think you and H both need to absolutely be comfortable with your MC if it's going to have any real, solid impact.
I also think no matter how difficult it may be, you do need to deal with some of your past issues, given that those things are what have brought you here.
Since H seems to be feeling you have been controlling in your M, maybe you can turn this into a 180 of sorts? Something like "H, I'm not really comfortable with our current MC, do you have any thoughts or ideas about another MC we could try out?" Then, you've spoken your mind but also given H a chance to weigh in and make a decision for a change.
Me:36 W:30 M:2.75 T:7 BD: 4/2015 ILYBNILWY: 5/2015 W Moved Out: 5/2015 W filed for D: 7/2015