Use a nail to secure loose siding???

Hello, I removed my siding to install some french doors, and when I reinstalled it I have one piece that is slightly off causing it to constantly come unzipped. This is because I added a drip cap over the door and that caused my siding to be bumped up about a 1/8" over the door, which is about the distance I'm off. It will go together, but won't stay together.

I really can't take the siding off and reposition, because I have a deck preventing me from accessing the lower siding (I had to removed several deck boards the first time and don't wont to do this again).

I've read to use a nail or silicone to secure.

Can anyone offer advise? What's the best solution and materials to use? Thanks

 

Yes, use a few dime sized dots of silicone every 24" or so.

 

I use Siroflex Duo-Sil. It's flexible after it's cured but quite a bit stronger than silicone (sometimes that's better sometimes it's a problem). I put a blob centered between the drain holes in the lower lip.

 

Thanks guys.... (I never get a notification from this site)