F-One Wing Strike V2 5.5 sqm Wing Foil

F-One wing Strike V2 5.5㎡ wing foil.
Upon checking for air leaks before listing, there is a small amount of air leakage as shown in photo 7. When inflated to the specified 8 psi and left for 12 hours, it decreased by about 1 psi (confirmed by leaving it for 3 times).
I removed the bladder and checked multiple times (4 times) but could not find a pinhole.
I also checked by submerging it in water but could not find it.
It maintained 8 psi for 2 hours from the specified value.
I did not notice anything unusual while riding.
The repair in photo 6 is after the pinhole repair. (Pinhole caused by placing it on pavement.) I considered buying a new bladder to list it, but since it can still be used as is, I am listing it at a low price.
There are no repairs on the center strut or leading edge.
No claims, no returns (NC, NR).
The air leak check was performed using detergent, so it has not been washed with water and will be shipped in its current condition.