My o4 rancher es has been reving up real high while I ride it. If I flick the throttle it will idle back down. I took it to the local honda dealer and he said that all it needed was some adjustment to the carb and lowered the idle speed. This did not fix it. The throttle froze up this winter while in my garage and I forced to to move and I have a feeling that this may have messed the throttle cable up. My question is how hard is it to replace the cable?