If any man' s work abide, which he hath built thereupon, he shall receive a reward (1 Cor. 3:14)
So EVERY believer goes through Purgatory then? You just said some will not because they are perfectly cleansed and will go straight to heaven (I.e.., Saints). My point is that this passage is not talking about Purgatory but the Judgment Seat of Christ of which ALL believers will go before to receive rewards for the works they have done or the loss of reward due to the quality of their works.
Do you still not realize that the review for these rewards takes place IN HEAVEN, not at a purgatory door?