No, Tom says only the large 10-12 pounders should be turned and then only once, halfway through the cook. I usually do 6-9 pounders and never turn them. Also, I do the larger ones lower and slower than the smaller ones. I figger the smaller ones will dry out if cooking too long, even at a lower temp and the larger ones have enough moisture and mass to go the distance.
You are doing a good job, experiment and eat the results.