For cracks, refixing lugs (or even making lugs) womens acrylic nail filler/powder is the best stuff https://www.ebay.co.uk/itm/Portable-...8AAOSwv7da6yij (skulk about on ebay for cheaper deals on bigger packs of clear stuff).
It is also sold as Plastech ( http://www.plastex.net/ ) which is the exact same stuff with a massive markup on price.
I've used it to repair massive cracks, reattach entire pieces of plastic and make + stick on new lugs. With a bit of care/practice the repair is completely invisible after paint and as strong as original.
Remind me not to buy anything faired from you! lol
We could learn a lot from crayons; some are sharp, some are pretty, some are dull, while others bright, some have weird names, but they all have learned to live together in the same box.”