Mounting A Solar Panel

[WildWG]

Sorry if I am asking old questions, but I am going to mount a solar panel on the roof of my TM and I need a little clarification.

Do I need to screw the mounts into the TM shell, and if so, where on the TM roof will screws reliably stay tight?

Some of you seem to be only using glue to hold on your panel mounts. Is this reliable?

By adding the weight of a solar panel to a TM shell, I understand that the torsion adjustment for that shell must be "tweaked". How much "tweaking" is necessary and more importantly, where does the "tweaking" take place?

Have those of you who have mounted solar panels on the TM roof done anything to secure the panel against theft?

Thanks for your help.

WGW

PS I am working with a 2000 2619, no air conditioner