Coolant leak from head bolt?

There are twenty bolts that hold on an LA cylinder head. Eighteen of them are the same length. The 2 longer bolts go through the rocker arm oil gallery. These bolts go on the top row. 2d from the rear on the right hand cylinder head, 2d from the front on the left. Swapping the long bolt for one of the short ones will leave at least 2 points improperly torqued. Could water from one of these migrate into a bolt hole? Yeah, could be.