My default modifications for small wheel base locos is to add a suitable Stay Alive and replacement wheel wipers. The DCC fit required a small Chip, the ZIMO MX622 which can be externally wired to the SACC 16 for Stay Alive function. The Chip is a tight fit between motor and body in the old style Hornby Terrier.
The Stay alive and a decent set of Caps fit neatly on the cab floor / in the bunker once the modest bunker weight is removed.
Wipers are added as per the Standard method given me by Barry Ten (thx again!). Operations over the longest double curve Insulfrog is now excellent.
Edited by BWsTrains