I've got quite a few of these BGAs from servers line cards and SAS/SCSI HDD controllers, the fiberglass substrate is super thin and very difficult to remove. What would be the best way to process them? Im thinking it would be to treat them the same as ram chips and to first soak in HCL, wash and dry, then ash and continue down that path. If anyone has found a better way I'd love to know, get 2-3 per server, 1 per SAS/SCSI drive and as many as 5-6 per line card.