Hi, thanks for the warm welcomes.
The leg was new replaced after the heavy landing that bent and cracked the original. Both legs were replaced with new ones, I believe these are hardened and sleeved chromoly tube. We have been working with the manufacturer at Dalby to determine the cause and ensure there was not a defect with other legs in the manufactured batch.
After consultation with Steve Bell RAA this AN was issued (http://www.auf.asn.au/airworthiness/AN020610-1_drifter.doc) to alert other drifter owners.