Ahhh, the imfamous skylight. Within 6 months my dealer replaced mine with new. The sealing failed in less than 2 months - the skylight actually lifted away from the roof and created a major gap. He resealed it. 3 months later, it was lifting again. I applied the 3M sealing tape, but within a month has leakage again in a heavy storm. Now I find the skylight cracked along the edges. Maybe from the second removal/reseal. Photo below:
I currently have black electrical tape over the cracks. I will be replacing with more 3M soon.
Amazon tape description:
3M Extreme Sealing Tape 4411N Translucent, 1 1/2 in x 5 yd