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I am currently having a few problems with soldering an Organic Silver finished PCB. The PCB is a Rodgers material, but I have no information on the exact type. I am using Multicore X33-12i no-clean flux, but this appears to have no effect on the pads. All of the joints are partial, and have very poor wetting, if any!! Has anyone had similar problems to this??? Any suggestions on how to fix this?? Unfortunately I can't use a clean flux as I don't have the facility to clean PCB's.