Have new to me 2006 Sportster 155hp that PO hadn't used in 2 years (low hours). Streering is very very heavy. Both steering cable ends are clean (no corrosion). What's most liklely cause - the steering box up by steering wheel? or the jet nossel in back. Guess I'll remove cable from box behind dash and see if I can cross that off list. Tach too sits on zero so need to check that out too.