Hmmmmm, tough to tell without seeing the actual file. If you want to zing it over I can take a look: mark@markbremmer.com My envelope was set to Symmetrical. I'm just takin a few guesses here: 1. the bevel cross section may not be centered on the plane and other CXs. (It will need to be centered the the one shown with red and green lines a couple of posts above.) 2. If you're working with a scaled down cross section vs. an offset one, it won't work. Try these things: 1. Make sure that the CX options are set to shape-to-shape 2. Move the bevel/CX closer to the preceeding CX and readjust the bezier curves 3. Increase fidelity of the object. It may be a C2 spline modeler issue too. I don't have time to try building it in C2 right now (my example was built with C3) but will try later. They have made some quality improvments with the spline modeler in C3. How's all this for a non-answer!?