[Slowmotoring]

Hi all, im new to the thread and also new to owning a 1929 Model A Tudor. I have gotten the vehicle running and on the road. I am curious though about how much vibration from the engine is considered “normal”. At a idle the vehicle sits smooth and the motor sounds good. Once off of a idle is when things start to vibrate. Driving down the road it has a droning vibration that does seem to come and go depending on vehicle speed and load on the motor. The vibration/drone is loud enough To have to speak louder than normal while driving down the road. I do have the timing advanced about halfway down while driving. Is this vibration considered normal or should i start thinking about diving into the motor? The car was restored in 1995 and has had very little use (couple hundred miles) since then. Not sure how much of the motor was rebuilt. I know the car is 91 years old, just not sure what is considered normal.