<<Have you ever put your trim at full travel (up-Down especially)
at cruise speed to see IF you're able to maintain level flight??
You might want to do a load test of the push tubes BEFORE you try this. I
have seen some VERY bad rod ends and rivets you wouldn't trust in your
grandkids Radio Flyer.
You might just want to limit trim servo travel after this test.>>

Now that you mention it, I don't remember seeing anything that gives the
"official" trim tab limits.  Are these left to the discretion of the
builder?  How would you set stops?

Gary Casey
ES