Hello fellow Pilots,
I have an early P3P with 89 flights and over 10 hours of flight time. Props balanced since nearly day 1 and I did not have any evidence of cracking. I installed the UAV Bits product as a preventative measure and was fairly pleased with the outcome. I did clean them up a bit and ground out some of the rougher edges. Installation was simple and straightforward although I did notice the creaking after the installation was complete. The arms are definitely stiffer and feel sturdier and I suspect that the creaking was due to the two plastics moving ever so slightly against each other. Thus far I have had about eight flights with the reinforced arms with no issues whatsoever or experienced any loosening of the screws. Actually with the additional flights the creaking sound has substantially decreased. I will put a few more hours on the arms and then remove the plates to check for any cracks if they ever do form.
Regards,
Albert