1972 -76 Rear brake Arm

Anyone have this trouble.
Ordered a chrome rear brake arm (or lever).
[This was Part # 81-3109 from PMC designated 72-76 Z750 -900].
This is the small lever that actuates the rear drum brakes.
The one I purchased is approx 130mm overall.
the standard lever on the Z1 series is approx 110mm overall. Kawasaki Part # 42029-21 & 42029-33

I do realise there is a small difference (bolt configuration) in the Z1 and the other levers on Z1A, Z1B, Z900A4

I think, this longer item besides having a great chrome finish, has the disadvantage of being hard to fit and it looks odd!
Seen a few standard length levers on ePay, however with postage look pretty expensive, also, its hard to pick the difference from a photo.

I would appreciate any comments.

I'm starting to think PMC made a mistake (which is rare) and this is lever is off a different model!
RegardZ.