I am seeing many resends from my Raspberry Pi server to the Ender 3 printer. I have printed the file directly from a SD with success but the same file gets many resends when it is sent from the Raspberry Pi server to the printer. It is also prepending an automatic leveling and a preliminary priming path before the code that is appearing in the .gcode. I had tried to add these to the CuraEngin pre code in the gcode section but have since deleted it. I have reinitialized the initical gcode with the option in the CuraEngine with no joy. Does the Repetier Server keep a prefile that may be added? Could it be a handshaking problem between the Ender 3 usb-serial port and the Repetier Server?