I got their box of 6 cheese tarts, and luckily there was no line. I had cheese tarts from Bake in Kyoto and Pablo in Osaka. I must say Uncle Tetsu's cheese tart is ok, and not amazing but worth trying.
The crust was a touch too sweet compared to other cheese tarts I've had in Japan. The cream cheese fillings are already sweet, so it's nice if the tart shell carried some saltiness.
Overall, three stars for improvements :)