michael,

Just a thought but wouldn't it always be better to increase your stake after a losing run rather then a winning run ? You obviously raised the stakes after a particularly good run and the inevitability of averages comes along and hits you with a few losses.

Im not saying you should increase your stake after losses, just when you feel that you want to raise your stake then you should wait for the losing run (could be 1 loser, or more then 1 but that is up to you) and then start your increased stake. That way the law of averages is working with your increased stake rather then against it.