Hi there, Bry! I've moved your question to the "450 Heli Sized" section of the forum, from the "Articles" section, since the question relates directly to the 450L.
I'm sure you will get quite a bit of help. A lot of us have 450 helicopters and a few of us have the 450L.
Some beginner settings that we, usually, suggest are as follows:
Throttle Curve:
Normal Mode - 0,35,70,70,70
Stunt 1 - 80,80,80,80,80
Stunt 2 - 90,90,90,90,90
Pitch Curve:
Normal Mode - 46,48,50,75,100
Stunt 1 - 0,25,50,75,100
Stunt 2 - 0,25,50,75,100
These are awesome settings to start with and will be changed so that they suit you. These settings also depend on what transmitter you are using.