2 things to consider based just on what you've said in this thread:
1. Proper takeoffs with a taildragger don't come from seeing the left turn tendency and then correcting for it. Proper takeoffs comes from knowing how much correction is needed to prevent the left yaw from happening in the first place and inputting it before the yaw happens (actually, as it would be happening if you didn't correct).
2. Your gear can still be crooked if the plane is taxiing straight. If the main gear pulls left and the the tailwheel is set to make the plane roll straight, you'll get a straight rollout and then a hard left yaw as soon as the tailwheel loses traction. I had Cub like that that gave me fits. I could taxi all day long perfectly straight down the runway, but as soon as I lifted the tail on a takeoff it would hang a hard right and head for the fence. Once I got the gear straight, truly straight, it became a very predictable airplane on the ground.