Did you get the instructions with it? If not, contact the buyer and ask for the url to the instructions. It is the same guy I got mine from, so he has a hidden file with the instructions. I don't think I have mine anymore, but I will look.
Better yet, here is the manual for the TET 612 which is mine. maybe this will help.
http://perfectplanes.com/TET612_Inst...nal_manual.htm
JT