One piece of advise: Never rush into material or equipment changes when things go wrong. Perfect your technique before blaming it on your materials. Use one developer, one paper, one everything and print the 'you know what' out of it to understand how your materials respond to modifications. Then, move on, but realize that all name-brand materials are used by some competent hands to create perfection. Most expert printers have settled for only a couple of papers, developers, etc. Equipment can be bought, skill has to be earned.
Welcome to the team. Looking forward to your contributions in the future.