Ok, this isn't a custom, but I was trying to get MP Starscream's fingers to stop being so loose, and what I used was this glue called "Tamiya EXTRA THIN Cement". Now, what I found was, that instead of just becoming a new layer to make it firmer, what it did was MELT THE PLASTIC! I think that was the idea, being it a modeling glue, that the two pieces being glued would melt together so that they would stick together. Now, one of the thumbs keeps falling out, and the plastic has turned a bit white. What glue should I use, what could I do about the thumb falling out??