A month or 2 back just tried out some ways for my upper pitchers to get hold onto something.......Some say that upper pitchers need support to form and if they don't they rarely form or it'll be smaller.....Some say it doesn't matter...But in my case i found out that upper pitchers of my miranda seems to like to have something to wrap over while forming and if it didn't the pitchers are much smaller almost half the size...
For example this 2 pics are upper pitchers which held on to something
This 1 seems thinner and flared peristome
For this pitcher i purposely did not let it wrap and look at the size difference with the one that held onto something
And this is the "something" i use

for my uppers to hold onto something and it works
Ken
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"Can anyone see such marvelous things, knowing them to be only plants and feel no wonder?"
Nepenthes.....The king of CPs!!!!!!!!!!!!!!!
To all drosera and sarra etc etc lovers don't kill me