OK......here is the long list.....
1) the tracks seem to be OK, but there is no sag in them, see if you can glue them to the road wheels, if not then you are in trouble....
2)the decals, yu need to cut the clear decal around the numbers to keep away from it or there is another way
a.-apply some future floor wax to the area where you want to stick the decal to eithere by airbrush or paintbrush.
b.-stick the decal, and if you can use some decal solution from "Microscale".
c.-another coat of future
d.- your favorite dullcoat.
Anothere not very important thing is that you used the wrong decals for an all dark yellow tank, academy includes decals for tank 712, which was in Tunisia and you could have used for it.