Warp drive or other ground adjustable props

Hi, What kind of experience have any of you had with 2 blade Warp Drive
or other of the ground adjustable props on 65-100 hp Continentals? Any
issues with these props. My airplane is currently equipped with a
beautiful 72 inch wood prop, 40 inch pitch on a C-85. It climbs very
well with this setup. However, I'd like to have the ability to try
different pitches to see what's the best compromise between cruise and
climb.

Thanks,

Wallace
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