I've had a pump assembly sitting in a box for 12 years, was quite surprised to see the state of the fuel lines. Think I may take a look at the one on the bike overwinter to see the state of the fuel lines in the tank.
I think i shall be doing an overhaul of my fuel system this winter, I think mine's developed a small leak (may be something to do with the fuel pump squeaking on start up after a couple of weeks of no use)