Cartridge sitting idle for 6 year?

Without boring you with details of why my system has been idle for so long I'm rejoining the audiophile world and setting up my system with includes a well-tempered classic turntable and a transfiguration spirit cartridge. I had a local dealer look at the table and cart and he adjusted it and said the cart looks good. He did say that the cartridge can kind of "dry out" and the highs may be a bit rolled off.

Can anyone share their experiences with idle cartridges? It's had modest use for a couple of years prior to it sitting idle.

The reason I'm asking is that I have no real reference point in listening to my system. I do know that everything sounds very nice and I suddenly have that old bug back of upgrading and because my dealer said the highs may be rolled off a bit I just can't seem to get that out of my head. You know, we all want the best out of our system. My goal is to upgrade all my cables first, then possibly the cartridge.

Thanks