I am experiencing a "slip"/"shudder" when accelerating in all gears while in "D". I do NOT notice this at idle only under a load. The trans, transfer case, and diff are all dry. At first I thought it was a low trans fluid situation but I am now thinking coil foul or misfire. I DO have a leaky passenger side valve cover gasket... which makes me wonder if oil might be seeping and affecting the coil pack. Thoughts?