hy giant clearance is pretty small, <0.5mm, and whatever would fit in there, is flexibile; i thought to force it a bit by using a 'sharp' screwdriver, but this raised the part a bit, and tilted it; so i tried to use 2 screwdrivers, one on each side, using gentle force, but nothing happenedTry to work a stiff thin blade under the edge and work it out.
i tried also this, also i tried to tighten the screw to the max depth, believing that this will raise the part, but it did not work, because the center hole is blindThat or maybe take a rubber nozzle tipped air gun and shoot down the center hole
hy footpetaljones, i google that, and i have improvised one, by using a long M6 screw, a M8 nut, and a heavy little thing; it worked, thanksIf the center bolt will come out, a slide hammer should work.
when i tried to put it back, even without the o-ring, it was a bit of resistance, because the air had no place to go out; maybe i will make a through hole in it, i don't know, is ok for now / kindly