Are you getting air in the system? Is the fluid getting frothy and whipped?
If the rack is leaking, I'd get a whole new assembly. They don't cost that much. I got a new rack for my GLH on eBay for $50, and a new rack for my Shelby Lancer and Spirit R/T was only $90 at NAPA. If you are going to go through the trouble of removing the K-frame to fix the seal, you might as well replace the entire unit. A new power steering pump (Saginaw style) from NAPA was only about $58. If you get a new rack, replace the pump and lines too.
If the rack is leaking, I'd get a whole new assembly. They don't cost that much. I got a new rack for my GLH on eBay for $50, and a new rack for my Shelby Lancer and Spirit R/T was only $90 at NAPA. If you are going to go through the trouble of removing the K-frame to fix the seal, you might as well replace the entire unit. A new power steering pump (Saginaw style) from NAPA was only about $58. If you get a new rack, replace the pump and lines too.