I dont have any adhesive on mine. just bolts and some layers of indoor pipe wrap (soft foamy grey stuff that I removed the tin metal **** from) that i squished down with the bolts. havent had any leaks yet.

The only advice I have is whatever sealant/tape you use, make sure its soft enough to mold into the crevices and get squished down to seal out water. Don't worry about vibrations, the wing is flimsy. It's gonna move alot.

 

Well, it's been on the car for a full day with all of the crap on it weighing it down. Imma pull it all off here in a few hours before work and see. If it didn't work, Imma pull it off tomorrow and order one of those M3 spoilers. I can't stand un-necessary bullshit like wiggling and leaking. lol