I've owned my 316 for 15 years now. Always keep up on maintenance. The last 2 times I've mowed, the steering has been really stiff! I greased all the pivot points as I always do, no change. Today, I jacked the front end off the ground. With the wheels up, it turns just fine. I greased everything again, lubed anything I could see moving and tried again. It's a little better, but still harder to turn than normal. I know this isn't power steering, but I know my mower. Something isn't right. Am I missing something? Any recommendations? Thanks!