Well, if you find some other 19" struts, the Sachs/Stabilus ones have 124 lbs of force. Just as a reference point.
I have the same ones, and they work fine... but I don't expect the hatch to raise automatically. Your best bet is probably to mod/replace the rubber stops that the hatch rests on when closed.
I have the same ones, and they work fine... but I don't expect the hatch to raise automatically. Your best bet is probably to mod/replace the rubber stops that the hatch rests on when closed.