The additional black silicone hasn't affected the roof's opening and closing. I bought a tube from Home Fix DIY store. They sometimes don't have the black one, so you might need to search a bit.
Another area to check is the hinge (see attached pics) . The nut and roof stud holding down the hinge were so badly corroded that they were breaking apart. PML refused to touch it in fear that they would damage the roof and be liable for a $20k new roof assembly. I did months of my own research and discussions with my WS before we finally did the fix.
As our E93's get older, I'm expecting more issues with the roof.
I've started a preventive maintenance routine for the roof. Every 3 months I use Einszett's Gummi Pflege on all of the rubber seals and I use CorrosionX oil on all of the metal moving parts.
The roof actually scares me a lot more than the engine. Most decent workshops know how to rebuild an engine and set the timing, but very few shops know how to fix a our hard top.
View attachment 72504View attachment 72505View attachment 72506