Svar fra LEGO® SHOP
24 November 2018
Emily, Customer Service
Thanks for your review. I know those wires can get a little tricky, but you'll have the best results if you thread the wires around each other a bit, that way they keep each other in check. You should be able to get the door to stay at a 90 degree angle to its hinges.
As for those extra bat-pieces, we make a pack of them for use in a variety of bat-sets. Some sets may end up with bats they don't use, in which case you can add them anywhere you like to decoration, or make something else cool that uses them.