My Golden Fleece wasn't working well, 4 coaches was all it could pull. Time for a microscopic look.
(When I do my maintenance I have the loco on a rig I have made which isolates the driving wheels from any road contact thereby negating any friction from wheel and rolling road. To do this I remove the loco body and the front of the loco is held on 2 pins in the front mounting holes and the tender is on some track for the power.)
I discovered the timing on Golden Fleece was very lumpy, and even adjusting the settings on the timing adjuster didn't improve the problem. So, looking further afield I thought the glad nuts were screwed in too much, a quarter turn was all that was required and voila! it can now pull 8 coaches with ease.
Fine adjustment on the rig I use is easy -β¦
The plastic support is held in place by a single slotted screw. If you have removed the screw and it is still stuck then it is only old oil holding it in place, acting like a bit like a glue. Tap or prize it free.