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Step 7. Cleanup. Use a shop vac and clean everything you possibly can. Use a razor blade and clean out the remaining bondo in the driptrays.
Finish method 1 or 2 of step 6 to remove the remaining spot weld material. The spot welds must be entirely removed or ground flush so that the carbon panel can sit flush against the roof frame. Use a sanding disc on your drill and grind down the entire perimeter. Bare clean metal with grinding striations are perfect for epoxy bonding. All of the foam dots on the roof frame cross members can be left alone. Remove all burs and sharp edges. Ensure that the bonding surface (the perimeter of the roof structures where the spot welds were and both drip trays) are completely ground flat with no paint, debris, left over sealant, sharp edges.
Use the shop vac again and clean everything again. Take a minute and clean up tools, get everything off your roof structure. Make sure to grab your garage door opener or it will be stuck forever in the roof frame like mine.