Polytempo barlines

[Dmitri Volkov]

Hello,

I am looking to engrave a polytempo piece with LilyPond, but am having 
trouble getting the bars to display properly. Using \bar "|" seems to 
ensure that both parts include barlines in the correct places, but the 
second part seems to also include the bars of the first part.

Trying to remove barlines, as described in the code at the following 
link, doesn't seem to work: 
https://www.bachproject.net/forum/viewtopic.php?f=2&t=448&p=1648&hilit=polytempo#p1648

Very new to LilyPond so any guidance would be greatly appreciated! I've 
attached a zip with the project files.

Thank you,
~Dmitri Volkov

ts-canons-v3.zip
Description: Zip archive