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Leaking cross over tube connections

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I just got done installing a fuel pressure gauge and cracked the 1,3,4 injector criss over tube lines to prime the system. Got it to fire up tightened the lines but now they won't seal and have a slight leak I've read they should be torqued to around 26 feels like I'm there and still leak don't want to over tighten them. What do you think is causing the leak the o rings around the cross over tubes or the tubes themselves?

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