Replying to Mounting bindings/boot length

So, i'm 14

I am obviously still growing and probably will be for a long time, and so i do not own a pair of ski boots as it seems pointless to spend hundreds of dollars on ski boots which will fit me for one year maybe two if I'm lucky and so instead i rent my boots, i do however own my own skis and bindings etc.

i own a pair of atomic Punx, they're a symmetrical ski and I'm about to have a marker jester binding mounted on them true centre, my question is, will i have to remount them every time i change ski boot length? i know that most bindings are adjustable with a screw but would adjusting them without remounting take them off of true centre or would everything remain the same?

Thanks for any help/reply's guys