Type 5 Beams "RANDOM ON SHIP" option doesn't randomize between start and end points.

https://www.youtube.com/watch?v=y5o4KGvJ3EI
`+Start Position: RANDOM ON SHIP
+End Position: RANDOM ON SHIP`

As you can see, the slash beams aren't slashing with these settings applied.
however, you'd expect them to do that! You'd expect the slash beams to select a random, on ship, start and end point.
Instead, if you'd want the behaviour as displayed in the video, you'd use the `+End Position: SAME RANDOM` instead.
`Random off ship` works like you'd expect.

Basically the desired situation here would be to have a slightly more accurate slash beam.