For me, the great quest has always been to find a mythical putty to fill seams. This putty would thin and clean with water. It could be removed with water and thus not harm the plastic. It would be easily paintable. And now, I may have found it! It is called-perhaps not surprisingly- Perfect Plastic Putty, by Deluxe Materials. ( Amazon has it, amongst others.) It can be thinned with water and, when dry (overnight), the excess is easily removed with water without damaging delicate detail around it. It does have a tendency to harden in the tube over time, but it can be easily softened again by placing the tube in a cup of hot water. I urge you to try it. You will be choosing "...wisely!" Nick Filippone