My fricken computer has a virus so I've been down for a bit...
My Rod is a Dragonfly DFW #99 (1st flyrod so I didn't break the bank). It has backbone as I've landed some gigantic Chums on it. I have the Rio Verasatips, but my Type 8 sink tip is only 7ft long while the ohters are 15ft.
Ok, that should help you out with some answers
I don`t know the Dragonfly rods at all but the RIO Versi Tip you have should be fine for all your river salmon fishing. The 7ft type VIII head is not a problem unless you are fishing deeper waters and this can be easily fixed by going to a good
FLY FISHING store and asking for a 15 ft type VIII head . While you are at the fly shop pick up a bottle of fly line conditioner for the running line portion of your Versi Tip. With proper maintenance you can have that line for a number of years.
Unless your running line is screwed up up royally I wouldn`t change a thing right now and save your dough for future buys.
BTW the Versi Tip head system and running line is basically a shooting head system, when casting try and avoid more than three false casts and "shoot" the line.