Do you have access to the Factory service manual? Theres a sequence in which to tighten the bolts. Also, be weary of how much RTV you use. When I dropped my oil pan on my old car for the turbo drain line, i only used RTV on the corners, and the areas where the gasket has curved/strange contours.

Since the bolts are so small, their torque ratings are pretty low, which means they can work themselves lose over time. Be sure to use Blue threadlocker on them.