Garmin discourages the PFD mount location, recommending a more solid (sub panel?) location, though Van's demo planes use the PFD mount. I used the PFD location and have periodic AHRS resets that Garmin attributes to vibration.
RV-14A Builder - kit #136
N314KC - First flight Mar 8, 2017, 24th in the air, >700 hrs
XP-400 Aero Sport Power, replaced with Lyc Thunderbolt 390
Sport Pilot (weight-shift control) - Airborne XT912
Dues paid 9/2020