Choppersuey uploaded a beta version to Helifreak a few moons ago.
It is based on the Trex450 SE V2.
You might want to try that until I get around to it.
Here is a link to the thread: http://www.helifreak.com/showthread.php?t=73300
Sorry No G3.5 Planned Because I don't have G3.5 any longer
IF you scaled down the G.5 Trex 450 by CDT you could create one .
if you have a gram scale and a 200 in pieces this will help, also a caliper to measure various parts.
thing to watch for is head speed, RF freaks out ,with Gaui 200 head speeds, so you have to fudge it down alittle so it wont keep freezing. even the Beta 2 for G4.5 050 will lock up if you over rev the Head, like coming down to fast or to intense Stick bangin.