I have also experienced nothing buy headaches travelling Internationally with long 1 piece rod tubes. Have had TSA take a saw to the unlocked case while heading to the Amazon. Had them run over a case with a forklift to only name a few.
I switched over to shorter 2 piece rods and carry them on the planes. Travel all over the world and no problem as of yet. If your set on the 1 piece rods make sure to contact your airline to see if allowed. A few years ago when heading to La Zona on LAN, I found out a few days before the trip that the max allowed checked piece was slightly over 50 inches or it would go on their cargo plane. Good luck getting those items on time
. Also most of the airlines have placed expensive fees on oversized items
. Again make sure to check the airlines before a big problem arises!
Best of luck
Bob Daly