<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px"><div id="yui_3_16_0_ym18_1_1458658465670_2557">Hi All,</div><div id="yui_3_16_0_ym18_1_1458658465670_2557">When I built my hatch system, I built it so the hinge pin has moment in it so the o-ring would have full contact before the hatch was fully closed metal to metal.</div><div id="yui_3_16_0_ym18_1_1458658465670_2557">When I vacuum test it, the hatch is not perfectly even in the seat, or at least it seems like it. I am wondering if I should close the hatch with the o-ring out and the hatch perfectly positioned and then weld bushings to the hinge so the pin has no movement. Or should I leave it alone and expect that the external pressure will push the hatch into place? </div><div id="yui_3_16_0_ym18_1_1458658465670_2557">Hank</div><div id="yui_3_16_0_ym18_1_1458658465670_2557"><br></div><div id="yui_3_16_0_ym18_1_1458658465670_2557">Scott, did you notice if your hatch hinge has play?</div></div></body></html>