Blackbird Sim/Milviz FG-1D Corsair RPM Discrepancy

For anyone who flies the Blackbird Sim corsair, I’ve noticed that the UI shows the engine rpm as being constantly underpowered, but according the the actual guages in the cockpit, I believe the RPM is working fine. For instance, in the screenshot below, the UI reads 1400, but I’m actually redlining closer to 3000. Is there a fix for this? Does it look like this for anyone else? I want to make sure my settings are okay and I’m flying the plane correctly. Thanks!

Have noticed this as well what I found is the HUD rpm is half what the gauge inside is saying

Good to know it’s not just me!