Hornby Class 14xx GWR Tank Engine : Repair Request?

I got sent this Hornby Class 14xx GWR tank engine by a chap called Norman. He said it was making a sort of "drumming" sound. Seemed fine to me! Support - https://ko-fi.com/00bill73561 FAQ - https://ko-fi.com/post/FAQ-C0C6E0UO4 Airfix 14xx -    • Airfix Class 14xx: Repair Request