After ~2.5 years of ownership, and always wondering why the CDL took 15-30 seconds to lock and somewhat assuming this was normal, it took over a minute to lock on Sunday. Yes, I know I have the slow actuator leak, but for whatever reason I never connected the dots on the fact that no oil ever hit my driveway. Eventually, I'll get the time and courage to drop the T-case and repair the seal. For now, I removed the cover and drained about 4-5 ounces of oil from the actuator. PITA getting the gear that comes out with it back in (on cover in picture), but I finally realized I could remove the shaft from the cover, install the gear, and replace the cover. CDL locks in under 2 seconds now. What a difference.