Just received an email from a VMPS owner.
Hi John and Happy Easter. I just replaced all of the Lpads in my RM40s on a whim as general maintenance. The tweeter pads were original 14 years old and the midranges probably 6 years old. It is a noticeable improvement. Just a suggestion for older RM40 owners.
This also reminds me, to remind you to at least once a year, take your L-Pads and rotate the shafts all the way clockwise and then all the way counter clockwise maybe 20-30 times.
This helps clear off any oxidation or corrosion on the contact points.
Just be VERY CAREFUL in the turning process, as the shafts are rather delicate.