I have the 3rd Rail Dreyfuss, ESE, and Super J3a Hudsons produced together 10-13 years ago. While undergoing troubleshooting and resolution of the ESE's excessive track power draw (caused by a mis-wired internal connector from the tachometer sensor board and resultant board failure), one valve gear pin on each side was bent and sheared and one linkage within the Baker gear setup fell off. Obviously, I can't safely run the locomotive on my layout until this linkage matter is resolved.
Back in April 2020, forum member Norton described replacing the valve gear on a 3rd Rail Super J3a Hudson via the Precision Scale Baker kit. What he didn't discuss in his post was the level of difficulty involved in executing this replacement. While I do have an illuminated magnifier, my fingers aren't all that good for the manipulation and placement of micro components. I'm quite sure that I could not restore the existing valve gear by replacing the pins and restoring the fallen links.
Accordingly, I seek opinions of others who have been down this road as to the degree of difficulty and dexterity required to implement the Precision Scale Baker kit. It's not a matter of the $30 cost, but rather one of getting hopeful and then finding myself unable to execute the "fix".