That would be a Craftsman 1/2hp, not a LiftMaster 1/4hp.

Might wanna double check you have your up force set high enough to lift the door, the up force on this model is determined by a blue or yellow plastic screw on the back of the motor. Turn it in small increments to the direction of the arrow until your door goes all the way up, though this may take a few tries.

Hello friend, what are the principal garage door suppliers you can recommend on Texas?

¼HP... Jeez, I can't remember the last time I ran into something that small