Models transparent parts requires a special processing. In order to keep the transparency, you must abbsolutely avoid the dissolution glues (Tamiya for example) or cyanos. The dissolution glues will… dissolve the parts. The cyano glue vapors alone will be enough to damage the parts and loose the transparency. So what to do ? Joker. When you don’t know which glue to use, use the white one, the wood glue. Gluing plastics with wood glue, this is madness ! Yes but it works. Of course the gluing is not very strong but it will suffices if you are a delicate modeler.