Hello. First post. Kinda nervous.

I have NN3 mkII with RD8, purchased when RD8 was first available. Used with great satisfaction, except...

When I loosen upper arm pivot for to set up for new row of images in a matrix set, the pivot binds. I must torsion the upper arm to get it to release. This is just opposite from the problem described in a recent post here.

I considered putting a spot of grease on the bearing surfaces, but have hesitated to try it. Any wise suggestions?

BTW, I am using Olympus E-500 with 50mm (100 mm equiv) f2 macro lens for high resolution panos. NN is set up with pair of Manfrotto RC2 QR plates for quick setup/breakdown. Like I said, rig produces images that give me "great satisfaction."

THX