some of the positions with rust i do plan on using but yea tryed bolting unbolting few times removed tiny bit but majority still there, should i try wd40 on those or no
Not sure if wd40 is a good idea when you're gonna want the bolt to stay put . If it was mine, I'd clean out the threads as well as possible (using grafta's suggestion if necessary), make sure the interior was thoroughly clean and dry, then mount the bindings with a good dose of blue loctite to make sure that no more air or moisture ever gets at the threads.
Coffee is your friend. Everyone else is an acquaintance.
I do this with all our boards at the end of the year.
I also need to do this with many new boards as the glue and junk gets into the inserts not allowing the screws to go in cleanly or square. Lib Tech was the worst with junk from the building process gumming up the inserts.
My middle boys new Forum I just did this and took this pic last night cleaning out the inserts on a brand new board