You are custom matching your tiller to your uniqueshooting style and setup. If you were a robot, ifevery single bow on the planet was made exactly the same way, and if every single limbon every single bow wereexactly matched in power throughout their total range of flex, then there might be a way to set tiller mechanically.But you're not and they aren't.

So... no. No mechanical means to set tiller correctly. This is one of the fewareas of archery where the human factor really cannotbe tooled out. Well, not until we start transplanting our brains into cyborg units anyway. [8D]

Besides, why over-complicate something that's so easy and simple to do?

edit... I misread your post, JNTURK. My bad.Sorry about that. Pre-coffee brain fog. [&:]

Yes, there IS a way to fine tune tiller with group tuning. I've never seen much need to mess with it to that extent though because, frankly, I can't shoot good enough to see a 1/4" difference in group size at 90 meters. [&o]I've never even bothered to learn the whole process. Even what I describe here is so far over and beyond what the average 3D'er and bowhunter does that some won't even attempt it.You'd probably have better luck finding out about those othertiller tuningmethods by going over to the archery talk forum and asking those paper punchers.