No if old parts that are worn-in are reused, just the initial extra oil/grease mix as mentioned in other thread to help first start, but a few turns with starter without plugs or spark should build enough oil pressure.
End gap is mostly common on dirt bikes, every 30 hours replace/check, insane:
Also check how manual states to insert the gaps opposite of each when installing.
1st ring (4) and 2nd ring (3) differ in shape.
Face the side with the stamped mark upward
Install the piston rings in the order of the oil ring,
second ring and top ring.
a) The first member to go into the oil ring groove is
the spacer (1).
After placing the spacer, fit the two side rails (2).
When installing the spacer, be careful not to
allow its two ends to overlap in the groove.
c d e = gap position in circle:
“C”: 1st ring and upper side rail
“E”: 2nd ring and lower side rail