Firs't off all here are the manuals for this model:
USER MANUAL: http://www.devicemanuals.com/guide/Television/Panasonic/Panasonic-PT51HX41E-51-P ROJECTION-TV-TkRJMk53PT.html
SERVICE MANUAL: http://www.dioldesign.com/imon/Ser_area.jpg
I follow the instructions from page 22 to 23 of the service manual (Fine Adjustment Mode - FINE - Convergence) but didn't get luck. The lines are too curved.
So, is there a way i can reset all changes i made on the service menu to factory default? And is there anything else i can do fix it?