shucks! I am so glad, they’re really good stuff! also- yes! there’s a lot of instances where he gets used for his luck, but I can immediately think of this instance from The Secret of Hondorica by Carl Barks (fair warning- has your typical misrepresentation of native peoples and tribes, but it does have story merit, great art and Gladstone gets to be a Real Stinker in it and totally deserves what he gets!)
and for those interested- this is O Lucky Man as mentioned by anon!