When overtightened, the heads are drawn down into the wood and break the plywood. This should be avoided, as it can be immediately noticed. For insulated doors, the hinges themselves, are split. Install each section and use the supplied knurl pins to join the hinge halves. In order to prevent the inside of the door skins from being marred by hammer blows, use a scrap piece of metal as a shield to protect the door.
Install rubber stops at the ends of the tracks and fasten in place.
The most important balancer information to keep in mind is that a premium balancer is wound with the door open, and requires about 4 turns. This greatly increases safety and reduces installation time. All doors already have cables attached to them. Each spring individually or both springs at once. In either case, the cables are to be wound onto the cable drum first, without skipping grooves or crossing over cables.