Jim,

Funny you should mention that. Actually, I just got an email back from SIG that said that said the firewall (and engine) should be at zero down and zero right thrust.

My friend has flown his SIG CAP at the factory firewall setting for 2-3 years now with an RCS 1.4 and really loves it. No idea if his is actually at zero or not, but he doesn't fly precision aerobatics (me neither) so he might not notice it.

Don't know if this plane really needs some right thrust or not, however, I calculated that with the .080" shim that Otter added, it computes to around 2 degrees of right thrust. That seems like a relatively "normal" amount of right thrust that many planes seem to have as a starting point.