My Dads favorite block plane was/is a Sears with a broken sole, he could make it sing and dance. I think it's a huge POS, but mostly because he loved it, and I remember him using it, it has a special place in my shop, and will never leave me. So I greatly appreciate what you are trying to do. I have no less than 5 exact duplicates of that plane, and try as I have, can never find love for them as users though.