Hello!
Sorry, I'm writing in english - I'm from Russia and don't know french. I've got the same problem with positioning and asked seller about it. He said, that it's right and ok. When printer autoleveling or reseting home position, it moves to the center of the bed proximity sensor, but not the nozzle. And to get correct g-code and print the model in correct place you have to set correct table size in Repetier host for TRONXY PRUSA I3 P802MA it's 220x220 mm, but by default Repetier host counts it as 200x200...
