I've heard of some Skybeacon issues in an Aviation Consumer article recently, I installed the Garmin GDL-82 in my RV12, although the install takes longer it worked perfectly and I did get the $500 rebate from the FAA after a successful flight test with no issues. However the article does state that your location, if "far away from good radar and ADS-B coverage" there's a good chance of failing the flt. test...this was in the recent June 2019 edition.