I recently installed both front CV joints on my.

I recently installed both front cv joints on my 2005 aveo. The old ones were ok but original. The old ones came out easy and the new ones went in easy. I did tap on the spindle ends twice with a block of wood and mallet. I dont know the torque but I did but the spindle nut on tight. The problem is that from 20 to 30 mph theres a vibration / voom noise I hear and feel through the floor board. After 30 mph the noise goes away. Ive put 200 miles on it and the noise / voom never went away. It makes no noise in turns or anything like that. All is tight. Is there a "break-in time"? Or was it wrong to smack the ends with a mallet to mate the xmsn / cv hubs properly? Is the spindle nut too tight? Did I do something wrong? Thanks in advance!