Roller Coaster Loops, Corkscrews and banked turns

[IMG_THUMB]http://i61.photobucket.com/albums/h53/Sodisna/scrren.jpg[/IMG_THUMB]
Trying use the Loth on a spline, but it’s not coming out right. One end of the loop is 90 degrees why the other is like 0 degree.
So, if anyone could be of any help, that would be awesome.