Once you get the hang of it, it is really easy. I use a straight edge on top of the board to mark a line directly through the tie bar, across the point and extended out by about 10mm either side. I also hold the tie bar in the centre of it's throw, drill through the hole in the tie bar with a drill small enough to go through, and drill through the board to make a mark underneath, do the same near the end of these lines and then find them underneath. With the same straight edge, I mark out underneath where the tie bar is, using these holes as my mark. Then remove the point and drill a 8 or 10mm hole through the centre mark (drill hole). Using a pair of pliers, bend over the tabs on the solenoids (the ones that are meant to go through the holes in the point) so that they face outwards at right angles, replace the point when the hole is cleaned up, put the pin up through the hole in the tiebar and line up the centre of the solenoid with the lines you've drawn. Move the solenoid left and right until you've found the position where it moves the point fully and easily, then screw it up by trapping the bent over tabs underneath self drilling button head screws.
Believe me when I say that I can fit a point motor quicker than I typed this.
Believe me when I say that I can fit a point motor quicker than I typed this.