bridle traps Brazilian Eureca

[afinador]

Dear Colleagues. 
I have recently used the known method to regulate let-off in upright pianos. 
(Paving HAMMER RAIL in the position desired of let-off) It happens that in 
the majority of the North American pianos the keyboard tends below when the 
weight of the WIPPEN leaves. Thus I can pave rail hammer in another position 
to regulate bridle traps, but now examining the height of the keyboard key 
in this situation. In the Brazil, where the North American pianos are not 
very common were a great one discovered.(?!) 
Greetings 
Motta 
Brazilian Restorer Piano