Dan, you're asking where I bought A6300's back in Nov 2017 - it has no relevance to the current bulletin. If you check Horizon's site under the A6300 product description there is an "Important Bulletin" link that clearly states servos bought AFTER May 1, 2018 with PID number SH804N may fail when used in conjunction with some receivers. Servos with a different PID number are not affected.
https://www.horizonhobby.com/a6300-h...o-mg-spmsa6300
Hope that helps...Scott