There weren't any decals in mine. I foiled the letters before primer and paint and made sure it was smooth, then as I did each layer I used an eraser to rub the paint off the layers. Worked like a charm.
No idea. When we moved, I had to remove them all from boxes and put them into plastic bags because we didn't want the bugs following us. Each kit takes up one freezer bag, and I have 4 large tubs full, plus the top of the shelf in the closet and some I've bought since we moved in boxes (probably about 20 more). And I keep buying.
I've got the 1/20th Dodge Stealth, the 1953 Ford and 1966 Chevelle. All three are really nice kits. The detail's a little light on the Dodge, but it builds up pretty well. The Ford and Chevelle are as detailed as anything I've ever built. Some of the Lindberg kits are old Pyro, Palmer or IMC kits, and they can be a little weird depending on the kit.