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Hello everyone I have a set of valves Martin Wilk made for my PT6p that are in between the stock and normal maw valves. The ports/holes in the valves are smooth and rounded out no bumps. Major improvement for the horn. However I had some other modifications on another set done I like better. They are 2 months old.

Pics upon request.

Price $1050 + Shipping.

What do you mean in between? What is? The actual size of the piston? The port? I tried to get a set of these for my Nirschl a few years ago, but the stock ones were too large diameter to fit so I was curious.