Sideways scroller

Hi all.

I`m working on a sideways scroller and having a few problems. Currently I have broken the level into segments and am adding a new segment onto the end so I can scroll for ever.

I seem to be having trouble though as gaps appear at high speeds and I cant seem to close them up effectivly.

I began to think that I might be better off creating a dynamic triangle strip that just adds more triangles to elongate the level.

Any ideas? I cant seem to find any way of doing triangle strips in action script as I would using something like direct X.

Whats the best way to do an infinite scrolling landscape in Actionscript ? Link to tutorials or advice appreciated.