Do any of you guys notice your bike using oil in between changes?? I've got a 07 with a big bore kit (103) S&S compression release cams and head work.. I'm going through about a quart in 3500/3700 miles.. It's not leaking and not coming out of the breather.. I keep it halfway up the stick.. I keep it topped off.. I'm using 20/50 Mobil 1.. Thanks