I nipped the heads off 8, 6mm cheap bolts, so when I pull or install either of the covers, first I wind out some of the bolts, up, down, left and right and hand thread in, my made up alignment pins. Now the covers effortlessly go on and off straight and even, and the new gasket has something to hang on, too. Start the rest of the staybolts, hand tight, wind out the pins, replace and begin your star pattern torque up.