I think the biggest problem w your play of AK os (not to mention, lots of others' play, as well) is to assume you have the "best" hand - ESPECIALLY against the maniac. Let's say it's you heads-up against the mainiac. You raise pf w Ah Kh; he calls (as usual). Unbeknownst to you, he called w 6s 5s. When the flop comes Js Ks 3h, you probably DO have the best hand, statistically. The problem is, now you have top-pair/top-kicker, against a flush draw. HE (the maniac) IS going to call you. If the river is anything like: 10s, 5d, 6d, 6h, 5h, or others, he's got you down. There are many other scenarios; however, each of them ends up the same: you lose. If you'd pressed HARD pf with A K suited, maybe even the maniac would've laid it down; and though it only gives you the surrendered blinds/pf pt, better than losing HUGE on the river.