Hey guys... so I just received my new acme prop today and on the backside of the blades I noticed some grind marks from a grinder to smooth it out or whatever. Has anyone noticed this on theres? I will post pics tomorrow. Can't figure out how to resize my pics on this MAC!!!

I had the same thing on 2 of the 3 blades of my 525. Made me wonder a bit too. I put it on anyways and after feeling the difference from my stock 515 I didn't even care anymore.

AFAIK they're from balancing it after it's machined.

AFAIK??? whats that...?

as far as I know

Yep, balance grinds, they all have them.

Here it is.. well that solves my question. Thanks guys. <BR> <BR><img src="http://www.wakeworld.com/MB/Discus/messages/65921/338345.jpg" alt="Upload">