Hi! I'm still looking for an encoder replacement. I'm surfing on the mouser website () and there are a lot of mechanical incremental encoder. Instead of the ALPS, that doesn't offer a real 1:1 replacement, I've found a Bourns model: PEC11-4220K-N0024. It's a 24 pulses/24 detents, 20mm shaft lenght, knurled profile, no switch, metal shell.....in other words these encoders are REALLY IDENTICAL to the original ones! Am I wrong? And if you want, there is the "no dentents" version...