Re: piston rings
Just a cautionary note for when you do get new rings: Did you line up the end gap of the piston rings over the alignment pins in the piston's ring grooves? If not, the alignment pin will keep the piston ring from seating completely in the ring groove.
The alignment pins are there to keep the rings from rotating around the piston.
If allowed to rotate, the open ends of the rings will snag on a cylinder port and ruin the engine.