Power sprinter is like a forge power runner go to http://www.powerrunner.com for a look, my take on the depth factor on squats is that 2.5 cms equals about 10kg approximately, as to your DeadLifts it may well be a groove factor getting back into a good solid starting position, there is an interesting article on T-Nation this morning about stance width are you too wide or too narrow, well worth a read, why don’t you try a sumo stance and compare your strength results with your normal stance and then go narrow and see which gives you the best result for your body size, cheer, ash