I was having touble with the dreaded AT-6 bounce when a friend of mine and fellow AT-6 pilot advised me to get off of the elevator as soon as the wheels touched the ground. We all tend to hold back on that elevator stick even after the wheels touch. This can be a real problem with the Texan because when the wheels touch, the nose is pushed back up in the air and the positive angle of attack on the wings now lifts the aircraft back off of the ground. This is caused by the wheels being farther in front of the CG than most aircraft. When the wheels touch, the tail sinks, the wing angle of attack is increased, and the aircraft comes off of the ground again, and so on and on and on until it either stops or you've ripped the gear out of your wing.
Just try coming off of the elevator as soon as the mains touch the ground and watch you landings smooth out. Mine did.