The more parts you have, the smaller is the chance to get a new part..
Lets think about it:
For example my Gamma GG is 79/82:
Chance of 13% to get a new part... That means we get 1 of 164 parts in a chance of 13% (Delta gg not in calculation)
In this case we have the following chances:
Alpha: 34 parts of 164 parts => 20,73% of 13% => 2,69% at all
Beta: 48 parts of 164 parts => 29,27% of 13% => 3,8% at all
Gamma: 82 parts of 164 parts => 50% of 13% => 6,5% at all
So far, so good. But we must also calculate the chances of a NEW part in a gate. In our example:
We have 79/82 Gamma GG => 3/82 are new parts.
So the chance to get a new part on gamma is: 3,66% of 6,5% => 0,24% at all
That means in our example we would get the next NEW part of gamma in the next ~417 spins... in the statistic... It usually could take 800 spins or only 200 spins... depending on something a scientist like me doesnt want to write: luck
regards,
dynx