I LIGHTLY glue the davits into their locating holes so that some movement is still possible. Then I use CA to glue one end of the boat to it's davit (CA so that it bonds instantly - otherwise it will just droop and fall off). Then maneuver the davits and boat until the rear davit lines up with it's corresponding locating hole on the boat. Sometimes the lifeboat is stowed parallel to the ship's axis, and sometimes they're stowed at an angle - so you have to take that into account. Then glue the assembly and reinforce the davit/deck joints with a tiny dab of styrene glue. But I usually replace the plastic falls with PE ones so that complicates construction slightly.