The following PCB supplier includes a free "PCB adaptation" service:
http://www.donordrives.com/blog/pcbswapguide"If you cannot find a ROM chip [ie if location U12 is vacant], and are working with a Western Digital hard drive, then it is likely imbedded in a main controller Marvell chip. That chip is extremely difficult to solder, and most of the time experts do not have success with it. Our company offers Free PCB Adoptation Service to customer who have made a purchase from our store. The new PCB will be reprogrammed to work with hard drive, with no soldering including in the process, whatsoever."