I, for one, have to respectfully disagree w/ mcnerney.... <<< different approaches>>> Personally I've never spent more than 35 or 40 bux for line--- I view the stuff as something that will get stepped on, nicked on rocks, caught in brush/ trees, etc.
I have no doubt that a nice line will be noticed by an accomplished caster, but for me-- well you get the point.....
At any rate, It sounds like you have a form issue to me-- no amount of snot, or oil, or grease will make a line shoot without proper form.
If you have the means, I'd say look into casting instructions-- No one here can tell you what the problem is-- but a casting instructor could get your cast sorted in no time.
Good luck, and keep us posted.