Thanks for all the great advice.

For what it's worth, my flexible fuel lines have all been replaced a
couple of times since I got the van in 2009, about 86,500 miles ago.
The last time was 2013, so it's probably time to do it again.

I'm not surprised the shop that replaced the gas tank recently didn't
replace the hard plastic fuel lines.  Some of you say they age
reasonably well.

I'll keep an eye on it and replace the lines again soon, probably
cutting back that hard plastic line to get rid of the squished bit.