Issue with spark plug wires

[Jance Customs]

I went to install some MSD spark plug wires on my 2000 Ram and the ends of the boots are really to long. The fit over the spark plug but they don't really snap into place. I'm afraid they will pop off if I tried to install them.

Has anyone ever ran into this? I'm thinking about cutting the rubber boot to gain about an 1/8". Should I cut them? Thanks!