Well i really appreciated this mod. i am living in Thailand (hot and humid weather) and i have just tried this out with the brittle paints (dye purple shell & Evil green shell paint) that my NT10 usually get chopping. wow i had to say that this mod really stop the chopping issues. no feeding issues from paint swelling using the light blue 010 o-ring.
My set-up is
Spacer: only spacer body (In terms of consistancy, it's better than none)
Insert: NT11 green insert
and laser cut spool bumper made from Dye regulator seat. last much longer than stock orange bumper