I recently acquired a 2001 Pearl Export fusion kit for my 8 year old son. It is in very good condition to the point that it doesn't look like its been played alot. We've had the kit for over a month and the stock pearl protone heads don't have much wear and they have kept their tuning very well on both the batter and reso side. The old drummer in me thinks that since they've most likely been on the kit since it was purchased (18+ years) I should probably replace them. So I'm considering at least doing the batters on the entire kit. My only apprehension is that the drums are played 99% of the time with Sound Off muting pads. This will be the norm for a good long while since my son is only 8 and I doubt he'll be gigging for awhile. Am I wasting $$ if I replace the batters on a kit that will be primarily muted for the next few years? I just want to make sure that if I put new batters on now but they rarely get hit, will the length of time they've been on the kit still require that I replace them again down the road even though they've seen little or no actual stick time? Thanks in advance for any responses.