Often, the access door to the weight pocket is originally formed by cutting a kerf inside of the jamb, and another offset kerf outside of the jamb. The face grain is not cut, but can be snapped apart, forming a scarf joint between the two kerfs. Since the distance between the bottom of the pocket door and the bottom end of the jamb is short, this portion of the jamb is vulnerable to splitting. That’s why when cracking open a pocket door – one that hasn’t been opened before – it’s better to crack it open from the top of the door. With the top loose, use leverage from the door itself to crack open the bottom of the door. This operation will decrease the likelihood of splitting the jamb.