another question about 5100 lift

I installed the belstien 5100 lift about two months ago. It took about 3 days for the lift to settle down about an inch. Now after a trip to the lake, I noticed the lift lowered what seems to be another 1.5 inches. Is this normal? Also, any tips on leveling? The front is slightly lower than the rear and I'd like it either leveled or higher than the rear.

 

What height setting did you set your front shocks to?
Are you measuring on a level surface?
From what point are you getting your measurements and are you using a measure?

 

Front shocks are on the second setting.
From floor to bottom of fenders I have
Front driver and passenger 38"
Rear is 40"
Ground is level and I have 265/70 R17