i have a fairly new e-3 on the front of my bike. last few times i rode it ,taking off when i get in the 15-20 mph range the front end has a very noticeable wobble to it. get above that speed and its gone.? checked front end all`s tight and good,check balance of tire-ok? cant really see any thing wrong here. anyone ever had this? iam thinking tire but it was fine for 1400 miles before this started.