CD - I automatically pass all "fixing" stuff on to Mr LB! They hero worship him for being able to "fix" stuff! 
It's great that their dad tells them he loves them. My dad went through my entire childhood without saying it once. I was 22 when I married and it was the first time that I'd ever heard him say he was "very proud" of me. I used to bring him home report cards with grade A's across the board and they'd disappear into his cupboard. He'd say nothing to me.
I only found out years later that he'd take them to work to show off to his friends. Not ONCE did he show that he was pleased with me and all I was trying to do was get some affirmation from him.
Now he's very sick and he's mellowed like Nam's dad. He regularly says "I love you" and he's much more open with his feelings. It repaired all the years of him NOT saying it. He's a messed up, wounded, and slightly crazy individual but he's MY dad and I guess I won't be getting another.
Relationships are bloody complicated, aren't they? 
And I love the sound of your OH. He is definitely a keeper!