Newbie hardware hacking

Spent the last two days taking my first steps hacking N gauge hardware. So far I've replaced split gears on and cleaned up an old Poole Farish Class 37, cleaned up an old Poole Farish Class 25 which will need four split idlers replacing, mopped up the factory gunge on a new Bachfar Deltic, and cleaned up and lubricated a Farish Class 101 (chassis type, photo below). The 101 now runs in the right direction :-). And just about worked out how to DCC them all. I've also knocked up my first two DG couplings. Must get some smaller pliers...