I wouldn't worry about pieces leaving the ET and lodging in the system too much. I remember when I cut mine apart, someone was worried about their broken ET dipstick getting sucked into the system...and I recall looking at the pieces I had to see if that was possible...and I recall clearly that I didn't think it was. The ET has a number of chambers...and nothing big allowing a piece of cap to leave it. I'd say I'm 97% confident.
Performing at the Comedy Cove--595 Morris Ave. Springfield NJ reservations 973 376-3840
A recent set
Skip to 1:30