A problem with coasters.

So once apon a time a guy named Wolfy2k4 (http://www.youtube.com/wolfy2k4) was having problems completing his coaster. For some reason the end of the track would not connect with the start due to the smallest difference in height.
Though solved yonks ago, may be an idea to upload it here so that anyone else with the same problem can find it.
And sorry for the crappy camera quality. I seemed to have forgotten to reset the settings. I set these settings usually when I just want to record some ambient sounds.