There is your problem right there. Nova plugs used to be great but they went in the toilet about 2 years ago. I hear they have fixed them but haven't got a new batch to try yet.

Things to try:

Go to a Nova 8

Get some Sirio 7's (or Werks) amazing plug, works great in Novas.

Find some GRP 7's.

Try OD99T. Not as good as the others but dirt cheap.

As for the rod, if this thing has a couple gallons or more on it, change it NOW!