I recently switched from SPD cleats on execustar shoes to SPD-SL cleats on diadora team racer shoes, it seems like the SL cleats are to far front on my foot. I have them positioned as far back on the shoe as possible. The spd cleats seemed to be further back and stressed my calves less. I know the executar shoes were cheap **** though, i bought them last year when i first started riding cause i wasnt sure about wearing shoes so maybe i never had my cleats positioned right to begin with. The new setup with the SL's seems to be just barely behind the ball of my foot,at least thats how it feels and it seems to work my calves more when riding. Anyone else experience this?.....is this how my cleats should be?