GP crossfire crates

So I bought 2 GP crates and I know the chances of getting a perm. gun is rare but people say that if u save them then the chance will go up I've saved the 2 crates for 5 months but how much longer should I wait until I should have a higher change than what it is now?

Never have I heard of this, I always spin as soon as I buy the crates.

The chance is the same...