I have heard several people saying they can't 3 mark anything, so I decided to show my road from ~90% to 95.06%. It takes me 7 games, only 1 of which is an Ace Tanker game. I play vanilla (no add-ons):
Game #1 (pretty sure I was getting XVM sniped or I was on the M12's hit list)
http://wotreplays.eu/site/4394797#westfield-blackroan-m4a3e8_sherman
Game #2
http://wotreplays.eu/site/4394782#ruinberg-blackroan-m4a3e8_sherman
Game #3
http://wotreplays.eu/site/4394783#overlord-blackroan-m4a3e8_sherman
Game #4
http://wotreplays.eu/site/4394784#mines-blackroan-m