Saaaaaaame noise came from my new 2012 fltrx with about 1100 miles on the clock. It ended up being the bolt that holds the cam plate in place. I actually had it let go while riding to the dealer, dealer said "ride it here, if it breaks it's under warr. and we'll come get you" so about 2 mi. from my house the motor seized. Caused minor damage to anything really, only destroyed the timing cover, replaced under warr. along withe new cam's and pushrods under warr. too! So I went with the SE254E cam's got them installed for free too with adj. pushrods, couldn't be happier, happend becuas MOCO didn't put thread locker on my cam plate bolt. I don't mind, worked out great in the long run. With my setup I run away from stock 103's easily! and CVO's lol
2012 Road Glide Custom Vivid Black named "Becky" with a simple motto "If it came from the factory like that, it doesn't belong on the bike!"