and good luck with fitting the aires sets into the hasegawa kit. i had the same trouble with them
you can check my F-4 black bunny build for details of what i did.... one thing for sure, sand, sand, sand. and when you think you are done, it is possible that is only half way. on way of know if you can keep sanding for example the bottom of the front wheel bay, is to drill a hole in a place where will not be a problem. you can use a piece of wire or similar, to measure how thick the resin still is....
if you place that piece close to a light bulb, it seems that is really thin for example... but you may still have a thickness of 1 millimetre t yet. so you can safely keep sanding.
first album for that build is kind of hidden... so here you have it
this is what i did with the wings
Picture 13 -I sanded it deeper next to the border, to have it fitting better later on, instead of sanding complete wing.
Picture 21 - I needed to cut a bit of the fuselage for the parts to fit corectly
16. January at 14:31:01