Trim effect with curve - Githubissues

What steps will reproduce the problem?
1. In a mixer, use a curve (3 points or more) and stick trim
2. Example of use : for aileron differential, one mixer with curve c1 and one 
other with !c1, both with Ail entry and trim = ON.

What is the expected output? What do you see instead?
When trimming :
- the aileron with !c1 goes in the wrong way
- on the side of the reduced throw (by differential), trim do not have reduced 
throw like it should have

What version of the product are you using? On what operating system?
Last version of Openx, on stock board.

Please provide any additional information below.

Original issue reported on code.google.com by f.ague...@wanadoo.fr on 2 Aug 2012 at 6:47

DeBesten / open9x

Trim effect with curve #63