Hi, I was performing a starter valve adjustment on my 2014 VFR. I went to adjust the idle speed using the knob on the left side of the bike, but the plastic knob would not turn. I'm not sure if the cable has seized, or where it attaches into the throttle bodies has seized. I was wondering has anybody else had this issue and how did they fix it? I'm hoping not to have to tear off the throttle bodies to fix this, but it might be on the cards if I get no joy. Thanks in advance.