If you have any plastic that needs glueing and waterproof and only has a small contact point the stufff to use is something called plexsis acrylic comes in a 2part compound and mixed in the nosel as it is squeeze out. It's the best thing out there. I build super yachts for 20 years now for the rich and famous and we use a lot of it on boats that are in the 20 to 30 million prise range . There are some different types rock hard. To ones with a bit of flexibility all dry with in 10 to 15 mins thanks for reading and I do hope this will help people with problems ..... master b Wright