I installed a new 7800 DA crankset a couple weeks ago and I didn't grease the splines on the axle where the non-drive crankarm connects. In the instructions from Shimano they make no mention of greasing this interface, but I've always thought if it was a splined interface it should have a light coat of grease? Got to thinking about it the other day on a ride when I was getting a slight ticking sound at a certain point of the crank revolution. Should it be lubed? What have other people with hollowtech II/ GXP/other outboard bearing BB-crank set-ups done? Thanks!