hi. my name is edson and i´m from brasil. i have a shadow aero 1998 and i´m having problemens because my bike have a HARD vibration betheen 2000 and 3000 rotation PM....i now know that this bike is same a halley davdison and have vibration but in my bike this is very very strong...my aero is new ..have 26.000 km in use...please..help me ...what can i do to solutions this problem because i love my shadow ..but is impossible drine her.....i already try several actions, in diferentes places, but all peoples tel-me is this natural..but no is true..because i drive other aero...ande i fill big diference ......my bike have problem..pelase...help me aal peoples.. tanks a lot...your brother brasilan....edson (please send ansewher to my email: mon@uol.com.br