Just a quick note on labbing Hydromotives. We typically see 150-180 RPM increase on them, not 250 RPM as seen with other manufacturers props. The P5-X is a special case however. We stopped labbing them about 3-3.5 years ago. The propeller is already pretty thin....which is why it can hold its own pretty well right out of the box, stock. This does not leave much for the labbing process, particularly the thinning aspect. We also have seen a much higher failure rate with labbed P5-X propellers, regardless of the company that performed the initial labbing. This high failure rate is why we stopped offering labbing services of the P5-X several years back. The gains reported were minimal along with RPM increases as well. This is not to say that you cannot thin the propellers significantly and experience the greater RPM increases, but the failure rate increases as well.
Food for thought.
Julie