Bitter sweet install or the other way around

I have been excited about getting my autopilot and ADSB installed and have worked for 3 days getting the hardware installed. I got down to the power-up part of the AP74 and servos and all looked good. Started the D180 configuration and got the servos calibrated and got to the next step and found that my D180 airspeed NOT at zero.
So, unless someone on here can tell me a trick to get the airspeed to zero sitting inside an enclosed hangar, I will have to take out the D180 and send it to Dynon.
I thought it was going to be a good day to take her up and see what the autopilot would do.
Any ideas?
Thanks

The d series has an airspeed calibration function. I would try that first. Just be sure to do it with no wind present. That should resolve it.

Will give that a try. Thanks.

The zero cal function is what you need. Also make sure you have not trapped some air in the pitot/static system anywhere. Does not take much!