Yeah, I've gotten used to it... If I zoom WAY in, it's not too bad. Lukily, most all the shapes are fairly symmetrical and I create one side, copy and mirror it to make the whole piece.
Here's a couple updates that I just finished. I took everything back apart today and spent a couple more hours re-positioning the turbo into a final, more optimal position.
This is the design for the manifold flange:
If the fabricators have trouble with the oval ports, a version with a round port will work:
Here's a concept drawing for the shape of the manifold. This free-form stuff is where the akwardness of the track pad really shows.