been there, done that. mine had uv rott and was missing clips and the original glue had failed. before you try to remove the clips, have a new pair of vents ready (p/n 31-1100 in the motorsorts catalog) (they are the back bone of the whole system) because of the pins that will (99% chance) break. if your pins are good and you're looking for new clips, not rusty or worn ones like yours probably are, id suggest the speed clips that they use on the back side of a speaker, you can pick em up for free at any car stereo shop. and i would use a pvc plastic pipe glue to hold the two inside pieces together or a black silicone like ultra black gasket sealer, and dont be afraid to use your finger to spread some on the inside of the gutter peice for U.V. protection in the future. hope some of my babbling has helped, good luck and be careful