Do you guys know if the upper and lower O rings are the same? And also, when removing the clips holding the injectors to the rail, didn't look if they should slide in the first or secoond lower groove on the injector and also didn't notice which way they go in, but I suppose they go from the opposite direction of the injector's multiplug and should be slided in towards the multiplug. Please if someone know these things help me out, I don't want to refit everything back together just to have to remove it all back again