It's unclear why all of a sudden the siphon is leaking. I suspect it is the reason why my last IPA sucks. I'll try more dry hops to hide the off flavor. Anyway will use worm clamp with existing hoses and then buy a size too small hose when I retire the existing hoses.
You might try just snipping an inch or two off the end of the hose. Maybe it got stretched a bit with repeated use.