I've seen a lot of videos from the Sprinter van conversions regarding sealing up the side trim panels (or whatever they are called. The plastic panels that clip through the wall into the cargo space). Once I got to remove my wall panels in the Promaster, I noticed sort of a similar thing, side panels seemingly fastened with some clips straight through. I have not come across any tips or videos specifically for this on the Promaster, are this panels already weather sealed, or will moist and water get through at any point? This of course matters when insulating the van, as I do not want to get any moisture into the insulation. I was thinking of maybe taking of the panels and sealing the clips.