Gently push the base plate back into position making sure the plate does not get wedged sideways between the two fork arms. One side at a time works quite well. Also, make sure cabling stays away from the gears. Install the five 2.5 mm Allen screws and tighten.

Screw the lock knob all the way until it becomes tight and then loosen about half a turn (the knob should sit in the same location as noted in Step 3). Insert the 2 mm Allen screw in the knob and tighten (but not too tight).

Check for smooth operation and that the knob will lock and unlock the base of the telescope so that it will turn. If it does not work properly, either the knob is too loose or tight or the Allen screw in the knob is over tightened. The locking knob on the fork arm is a good reference of how the locking knob should operate.