Tight-Fit: A Truly Tight-Fitting Sudoku Variant Puzzle

Today's Puzzle:

A smooth puzzle to start the week. Thank you The Bard!

Link to Play Along:

Tight Fit by The Bard http://tinyurl.com/SudokuSleuthTightFit

Rules:

Normal Sudoku Rules Apply. Place each digit 1-9 into each row, column, and box.

Killer Cages: Digits in cages add up to the value in the corner.

Kropki Dots: Digits separated by a white dot have a difference of one.

Region Sum Lines: Digits in each box along the marked lines add up to the same value. Different lines may have different values.