[klondike98]

Those bakelite blocks are actually pretty easy once you have done one or two. Here's a tutorial from our library section. I usually take them out of the chassis completely but here Mike (morzh) does it without desoldering:

https://philcoradio.com/library/index.ph...soldering/

Service Bulletin #289 is also useful:

https://philcoradio.com/library/index.ph...lock-data/