Yes you have!

You know, I had a similar problem this past weekend. Assuming everything is clean,straight and needled properly, it MAY be the glow plug. I pulled mine out and stuck it on the glow driver. The last couple coils at the end never heated up. Replaced the plug and flew. I still have a few problems, but it was at least flyable after that. Before, it acted like the low-end needle was off and couldn't be corrected.

BTW, how did you check the crank? If you went in on the nose with any speed, you could have bent the crank slightly and it's binding enough that high rpm aren't possible. It could heat up and bind pretty quick.

Check the manual for low-end needle use. It does sound like it's loading up.