pro-1 pro-10 pro-100 remove printhead print head

hello guys, Like many peeps on here I also have a Pro 1 which has been unused after making a few hundred prints 3 years ago. I left it with the original inks and print head and now looking to get back into photography printing I turned her on to find the following issues.... 1/ attempted to do...

Hello, I didn't use my PRO-1 for 3 years, and now some colors are clogged, the worst being PBK. I tried to put some wet toilet paper soaked in the "pharmacist" solution (isopropyl alcohol 20%, ammonia 2%, distilled water), and position the printhead on top many hours, but it is still clogged...