Uber-clyde (300 lbs) just upgraded tires to Big Apples and saddle to B190...both great. Have tried various handlebars, including cruiser bars, and now Titec Hbar, but really need to get the stem up another 2 inches or so to take pressure off hands/wrists. Already put on a steering tube extension. Adjustable stem is all the way adjusted up. Wish the bike would take a quill but wishing ain't enough. Any suggestions for more height on a modern style stem?