ORIGINAL: johrich

Glad you know about the hidden pot. That's what I wanted to make sure. If you have not seen the AXE 400 forum, there is much discussion on it. I built my Mini-Titan about a year ago, with a GY-401 gyro. Several months ago the gyro failed and so I bought an HM-4000 to replace it. It did work, but it tended to drift and didn't have the locked in feel I was used to on the GY-401. Unfortunatly, that was before the discussion on the hidden pot, so I never tried to adjust it. After I had the HM-4000 for about a month, I discovered that the GY-401 was still in warranty. I sent it back to Futaba, who shipped me a new one within about a week, so I replaced the HM-4000 with the new GY-401. I was thinking about building another mini-titan and usiing the HM-4000, so when you get your mini-titan finished, I would be curious to know how it works once you adjust the hidden trim pot.

johrich