Brompton stem sizes – need your help

Hi all, I need your help! 🙌

We make leather covers for Brompton stems and recently found out there may be different stem sizes/lengths depending on the model and year.

We currently make covers for M, S, and H types, but we just got a message from a customer saying the cover for their M type is too short — which is the first time we’ve encountered this. (Photo attached.) Since we use molds for cutting, it’s  not a manufacturing defect.

If some of you could share:

• your Brompton handlebar type (M / S / H)
• model year
• and stem length (or even just a quick measurement/photo)

…that would help us a lot 🙏

Really appreciate any info so we can make sure our covers fit as many Bromptons as possible. Thanks!