Confused . . . I have 30K at the moment, dealer changed my fluids every 2,500 miles, I have a few years left on the extended warranty. . . no problems other than a pinhole in the head that needed replacing . . . do I leave things alone and hope? . . . bike runs great . . . am I looking at an unavoidable problem in my future if I don't replace something? Just came off a 6,500 mile run . . . don't want to be found on road dead . . . not a gearhead, know absolutely nothing about what keeps my CVO running other than my key and the fuel I put in it . . . this thread has scared the S...t out of me . . .
Sounds like your dealer knows you well. Ask him about cutting yu a deal on just replacing your lifters with the Harley SE lifters. He might give you a discount due to all the oil changes. And if the dealer does it with HD parts, no ESP problems.
I don't know for sure, but I'll bet a good mechanic can replace the lifters in two or three hours, from the top, so you'l need valve cover gasket set, lifters and some labor. Under 500 for sure I'd think, and if you have been paying close to $300 for those oil changes, switch to 5000 miles and you will quickly recover your costs on the lifters.
Don't be scared, look at it as a maintenance item like a timing belt on a Toyota. Fix it now or it will break at some point. Sounds lke you have a good CVO and want to keep it, just have the lifters done at the HD Dealer.