Welcome to the forum. Yes, you are in the right place :B
Couple things to ask on the set up...
What is the voltage at the main house where the circuit connects?
With no load the voltage at the lodge and the house should be the same.
What size wire connects the house to barn? What size from barn to lodge? How long are the distances? What size breaker is at the house to feed the barn? Is this feeder to the barn 120 volts or 120/240 volt service?
If this is 120/240 volt service (fed by a double breaker) please measure the voltage on each side in the barn.
Otherwise I think you would have been better with a 30 amp Hughes Autoformer over the voltage booster.