Hi,

First time poster.

At the urging of a friend I purchased an inexpensive Prusa clone from Ebay. http://www.ebay.com/itm/262562441022...%3AMEBIDX%3AIT

Darn thing is Quite addicting....

Built it got it working pretty well but had a lot of issues with the extruder. I purchased a E3D V6 hot end and Titan extruder and printed the prusa carriage with the Mk8 setup before tearing it down.
I also upgraded the z axis couplings from plastic tubing and new linear bearings since the OE ones had a lot of slop.

Everything is all mounted up and I was setting bed height and found the X axis is reversed. I found where I can change the Extruder turns per MM on the LCD display, but cant for the life of me figure out how to reverse the X axis travel
If I have to dive into the firmware level should I also consider upgrading the firmware. My printer has this controller board http://www.ebay.com/itm/BIQU-GT2560-...IAAOSwMVdYInww

Thanking for any pointers/advice in advance

Jeff Krebs