I have a vinyl bulb seal extrusion that gets installed into an aluminum trim extrusion.  I've modeled this vinyl extrusion based upon the drawing I got from the supplier, but do not know how to "install" it in the assembly so that it bends and fits into the aluminum extrusion.  I've attached the part models and a 2D DWG of how the assembly should go together. 

I've tried playing around with the flex command, but I'm a SW newbie and the help files are vague to say the least.  I have several similar assemblies to create so any guidance on how to approach this would be greatly appreciated.  Thanks!