EDIT - Moved from this topic: http://forums.iboats.com/forum/engine-repair-and-maintenance/volvo-penta-i-o-inboard-gas-engines-outdrives/614113-volvo-penta-sx-m-steering-vibration-not-what-you-think
I am having similar symptoms and i have not started replacing anything just yet.
2010 Regal...
