Prints are coming out wavy

Hello,

I had mentioned this in another thread that is open but I am hoping maybe someone from the Robo team has an answer. Every print I do is coming out wavy. The layers expand and shrink. Everything I have tried along with some pictures of whats going on is in the following thread.

http://forums.robo3dprinter.com/index.php?threads/filament-stops-extruding.1267/

Since the last post I have gone about disassembling and reassembling the mechanics that raise and lower the z axis. It made no difference.

I have been having a ton of issues with this printer since I have receieved it and have still not been able to get a single good print yet. Hopefully its something simple.

Thanks,

Shaun