On the
DW 7000, there is an adjustment on the top that displays +/- on the pivot, Center it.
And bring the lower spring to half way on the tension.
Make sure your drum is leveled. When attaching the pedal, turn the wheel first till it's tight and leveled. Then turn the "T" shaped handle to secure the pedal.
That should solve your problem.
I have the similar drum and pedal as yours.