mlud00

My 2012 has something stripped in the power seat adjuster that tilts the back portion of seat bottom up or down. I can manually turn the screw mechanism and it will work for a second then start making a clicking noise and nothing happens. Are there any repair parts available? I can't seem to find any although I haven't look in-depth yet. I see the whole seat bottom with the motors and screw adjuster (think 3) on Ebay for $300+, but don't really want to spend that much. I have it set to where i want it, but would like to try to fix it myself, if I can. Any suggestions?