So the gas struts for my Leer camper shell is leaking and they are struggling to hold up the rest hatch. I tried entering the numbers printed on the strut on Google to find replacement but having difficulties finding replacement. Any recommendation on where I can find equivalent replacement? What are the key dimensions that I should pay attention to beside extended/collapse lengths, lift poundage and the size of the ball joints? I attached a few images of strut that I'm trying to replace.