[sts03]

hi everyone this is my first time being on this forum and it looks like a cool site.anyways i have tranny fluid leaking from the seal were the axle goes over the side gear.just had the axle and ouput shaft seal replaced a couple of months ago.im not sure if the axle is seated ,if i grasp the cv housing i can move it back n forth at least a 1/2 centimeter to 1 centimeter.it even leak out when i was moving it back and forth,looks like it is leaking from the rubber part of the seal that goes around the axle.do i have to take the whole hub off to try to seat it or can i just remove the axle nut and lightly tap with a hammer.also is the seal probably damage or is it leaking cause the axle is seated .also the side gear that the axle goes over has some play [up and down movement]maybe 1/4 centimeter if that much is it supposed to have some play.