Yep thats normal. When you hit BP it's not going to lock in there, you have to keep it there with throttle controll and tapping/slightly dragging the rear brake(really the brake is for past BP) Keep adjusting your wieght back and you will know what im talking about holding it up with throttle control. right now about 10g I hit BP, I then lightly let off the throttle and hold it there around 9g if it starts to come down I lean back a little and give her a little more gas to put it back in. if the throttle is a little choppy she moves around to much and wants to come down or go over.

Easy does it, your there now just fine tune it.

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01 929 RR
94 FZR 1000
00 YZ 250