Marlen Straight Ostomy Catheters

Question: I have used the Marlen Medium Straight Catheters-30 French for years. However, something has changed through the years - the rubber is so much softer now when
they are new. I have so much trouble inserting the
catheters into my pouch - they bend because they are
so soft and won't go into the pouch, especially
when I have gas, which is most of the time now. My
pouch surgery was in 1980 so the pouch is old and
really needs a harder catheter. Other than that the
catheter is great once I can finally (after weeks of
working with a new one) and depending on old ones
in the meantime, get it where it will insert easily. Do
you have any suggestions for me?

Question: I have a Koch pouch and use a catheter - am currently using water tubes purchased directly from the manufacturer at $50 a piece. I use these because the inside of the catheter is larger. what does the small, medium and large refer to?

Question: Do you carry a 28 French continent ileostomy catheter

Question: DO YOU HAVE SMALLER SIZES ? 14 OR 20 FRENCH AND ARE YOUR CATHETERSHARD OR SOFT RUBBER. I FIND THE SOFT RUBBER TO BEND WHEN INSERTION IS TIGHTENED WHEN CONSTRICTION IS APPLIED BY THE CONTINENT ILIO CHANNEL.
ALSO, ARE THESE CATHETERS SOLD INDIVIDUALLY SO THAT THEY CAN BE TRIED
OUT (EVALUATED) BEFORE PURCHASING A PACKAGE ?
THANK YOU.