Only found this thread as you have posted the 35 tonner, so about the buffers and previous crane, terrific job!
I have done similar with the buffers, but also painted the hydraulic shaft silver and painted grease on buffers like you have done on the small crane
Lumsdonia <--- Hit link to go to my website for full story and wiring advice!
After reading the book and seeing the plans within the Hornby model is clearly a 75 ton, also noticed the number on the side of the jib runner wagon 'DB998617' and 'DB966111 crane number' are for....
I have now modified the parts concerning the crane carriage, jib runner and relieving bogies. I was surprised how soft some of the plastic parts were. Time to start reassembly.
Not posted on workbench for some time I got bogged down on the crane and was building it more for club use but left the club so the crane project fizzled out. I may come back to it.
I have been working on the layout on and off all the time just not posting. So here are a few wagons I have been working on and adding loads, still some lashings to add but here they are.