HES 8000 The 8000/8300 can be adjusted to compensate for frame and door irregularities. Sometimes, adjusting the frame and door back to industry standards is just not an option. Here are some tips to quickly compensate for frame twist and determine the condition of the latchbolt. Measure Frame Twist One way to measure frame twist is to place a carpenter square on the stop and the fae of the door. If the angle is less than 90 degrees, the 45 degree ramp angle of the 8000/8300 is steepened and may need to be corrected as shown (Figure 1). We recommend you check the condition of the latch bolt prior to installing the 8000/8300. Poorly constructed, worn out or damaged latchbolts may not slide along a ramp at any angle. To check the condition of your latchbolt, we recommend applying a slight force to the tip of the latchbolt (about 45 degrees to the door face). Make sure the latchbolt can be pushed into the door. Compensate for Frame Twist When a frame is twisted, the relationship between the face of a closed door and of the inside face of the frame (i.e. Rabbet) may not meet the 90 degree industry standard. Untrue frames and doors impact latchbolt wear and the force required to exit, so we recommend you ensure that the angle is between 90 - 95 degrees. If manipulating the frame is not possible, we recommend placing several shims under the top and bottom (stop side) of the faceplate (Figure 2). This effectively increases the 8000/8300 ramp angle and compensates for the twist. You can also compensate for frame twist by placing shims under the top and bottom (bevel side) of the latchbolt (Figure 3). To learn more about this concealed electric strike, please visit the 8000 product page.