All changes to tower
| Date | Change | Source |
|---|---|---|
| 6 Mar 2021 | 8: weight, diameter amended; 1-7: nominal added, 1-8: frame number added. S | Nigel Taylor personal tuning records |
| 18 Feb 2021 | 8: nominal added; 1-8: turning added | WBF records via Richard Offen |
| 4 Mar 2019 | 1-8: diam added | David Sloman via 00013328 |
| 18 Jun 2007 | Tenor note C# not C | George Williams via Letter |