I have a barely modified GT-35. My prop is getting to were I notice some performance loss. My question is should I get this used GT prop rebuilt and tweaked by someone who knows best or go back with factory. Is there a different pitch or size other than the factory big blade that would give me faster plane and push more load.

Can somebody answere this? I am looking into the same thing. Thanks

What mods?
If it is "barely" modified a new stock prop is the way to go.

The stock prop works the best

I had highly modded motors and still ran stock gt prop!! Had everything you could think of done to them and still stock prop was best !!

These guys don't know what they're talking about. Send a PM to Hershey. He's the mmt prop guru.