It has been brought to the attention of Cesaroni Technology Inc over the past few weeks that there has been a high failure rate on Pro29-3G Mellow reloads. We have been looking into this matter and have verified the anomaly which stems from an over-pressurization at ignition resulting in nozzle and/or forward closure blowouts. Upon investigation it appears the cause is primarily due to an overly large ignition pellet. The issue is only in this one specific motor/reload (i.e. 143G33-9A), the rest of the Pro29 lineup is unaffected. Unfortunately, it appears the pellet supplied during assembly of the Pro 29-3G mellow reload was too large. Due to the small throat of the nozzle in combination with the excess gas flow from the pellet, this can cause an over pressurization of the motor resulting in failure. CTI has already made corrective measures for all reloads/motors sent to dealers from October 1, 2020 onwards.
Full announcement: http://www.pro38.com/pdfs/Bulletin-Pro29_ 3G_Mellow_Pellet_Issue_v1.1.pdf
Pellet modification instructions: http://www.pro38.com/pdfs/Instructions_For_Pro29_3G_Mellow_Pellet_Modfications_v1.0.pdf