Inconsistent Chain Wear Measurements - Replace now or not?
My main ride is the Novara. While preparing to clean and lube the chain, I measured it using the Park gauge (I now realize that many here don't think it's very accurate). While measuring, I found that the 0.50 indicator dropped in completely at some links, but completely stayed out at other points on the chain. At no point did the 0.75 gauge fit in. I'm at about 2,500 miles on this chain.
Is it common for chains to measure inconsistently like this? Should I replacement it now, or put a couple more hundred miles on it? Cleaning has been every 100 to 200 miles with a Park Cyclone, citrus cleaner, rinsed several times, and then dried thoroughly. The chain, a SRAM PC 850, has no surface rust. Most rides have been on blacktop, with occasional limestone trail rides.