I with WRB (Tom), on this one. The first thing I thought of was drag settings. It is often over looked but is extremely important. Keep your hooks sharp. I am not a fan of the stock hooks on the Strike King Cranks...get some premium gammys,vmcs, or Mustads and swap them out.
Id try these things bbefore, id start swappin out rods or line. Triple fish is a good line, a buddy of mine uses TF exclusively and uses the exact line for cranks...and he is known as a cranker....so my guess is the line and rod should be fine.... good luck, keep fishing and keep fine tuning your mechanics, and the small things...