Two things I want to bring up after months of building or using the lid modification.

1) Make sure the screw top is fully screwed back down or the little buggers seem capable of crawling through the lid screws.

2) When using he very hot settings of the glue gun it can melt the plastic spout and ruin the plastic. The glue flows better with the hotter setting so if you use the gun at this heat level just give the glue a few seconds to cool down a bit before inserting the pour spout onto the lid.