Another Sudoku Master Piece, 6's and 7's

Today's puzzle is 6's and 7'z by Blobz. He's a fantastic Sudoku variant creator with over 100 puzzles to his name.

You can play along using the link down below, All 6's and 7's by Blobz:

https://tinyurl.com/SixesAndSevens

Rules: Normal sudoku rules apply.

A black dot between cells indicates that one of the digits is double the other.

Digits in cages and digits on lines sum to either 6 or 7.

Digits may repeat along lines if allowed by other rules.