My posts are typically worthless.. but just as an fyi.. if you flip the gas strut mounting, such as the cylinder end vs. the shaft end, you'll get a different result when lifting or closing the hatch. There is oil in the strut working like a shock absorber, but it only works one way (because oil settles in the cylinder valve end due to gravity, since it reverses in closed or open position), either to dampen the lift (so the hatch doesn't flip up suddenly) or to dampen the closing (to avoid a hard slam) depending on how you install it. Just something to be aware of for gas strut installation if anyone didn't know..