I had my 2010 wrangler unlimited into the steelership last week and they replaced two front u joints. A few days later I was out for a drive and I noticed that whenever I got up to around 50 mph the front would shake. it wasn't bad enough to cause me to panic and it seemed to stop when I got up to around 55 mph. I'm pretty sure this wasn't going on before I had it in for service. Could the service that I had cause this issue?