Hi Rob,

> any ideas for a work around?

You might try placing some additional profiles to force a specific connection between the rails at a good spot.

If you'd like to post or e-mail the .3dm model file with those curves in it, I can try to make an example for you.

One problem with sweep can be when the profile curves go along the rails at sort of different rates of speed, if you place another profile in the middle of the sweep or at a strategic location where they are not connecting up well, then that will force an additional "synchornization spot" to happen in that location which can tone down that kind of a problem.

Also currently MoI's sweep has a problem where it is sensitive to the control point spacing of the curves, I'm going to be doing an overhaul of sweep before v2 is finished to make it more focused on pure distance traveled along the curves rather than being sensitive to control point spacing.

- Michael