Congrats on your new Stream and welcome, you are in the right place for answers to your questions. and speaking of right places, what a great place to have spent your first nites!
Fixing leaking tanks may mean isolating the leak. Could be a valve ,simply junk caught in the blade or rebuild the valve or replace it. Tank may need a patch.
There is a LED guy on the forums that can help with the lights. LED has come a long way.
Enjoy your new trailer, safe & happy travels. John
Region 3 , 1st VP
Go often to the house of a friend, for weeds choke the unused path........Emerson
Never pick a fight with an old man. If he is too old to fight he will just kill you........a wise old man.