proform 765 ekg speeds up by itself?

I lost the key to my prform 770 ekg treadmill,where can I buy this key?

my treadmill stopped?

How do i determine the value of a burnt resistor?

My treadmill inclines but the belt will not run. I checked everthing!?

Aligning belt?

how do i remove the motor cover without breaking the plastic?

Incline stuck up?

Incline on my treadmill works, but nothing else?

380 proform razor?

Treadmill Warranty?

e1?

when walking the belt will stick?