Went mudding a couple weeks ago and ever since there is a "clicking" sound under Jeep when driving. It's more noticeable on the front driver side. The only thing I have found it may be online is u joint, diff(maybe), or drive shaft.. Went by and had mechanic look at it and they said drive shaft, but husband says it looks fine. We jus don't want to get that fixed and that not be the problem. 2011 Jeep Wrangler. Sound seems to be getting worse.