Sealant and awning patch? 2018 Sunstar 29VE

[edju]

I've got a 2018 Sunstar 29VE. Two questions...

The front cap to the roof has a lap sealant. I think it's silicon based from what I've been able to read. It has a few small cracks. Can I cover those cracks with Nuco or Hengs 311 without having to remove all the old stuff? I can clean it well, but will new sealant adhere well enough?

I also have a few small tears in the awning near the attached roof channel. I wanted to just apply some patch tape to prevent them from getting worse. Is that okay and if so what is the best tape to use? Other ideas?

Thanks as always for your help and comments. I've got a lot of good info from this forum.
Ed