Bighunter, what are the odds this is at Durbanville DFO? I have exactly the same situation and my Glock19 also came from DaveSheer via Parow Arms as per the 350a I attached.
As it was explained to me they need the 350? to indicate that DaveSheer had the FA prior to that.

2week wasted and I was so hoping to join Geoff and the gang down here for the training end of Oct :(

@TJ: If you dont mind I will be making contact on this matter as well.