strange behavior for small alpha2 value

[dylanmikesell]

We are getting some strange behavior (or we think it is strange) regarding alpha_2. When alpha_2 is zero, we get a smoother model than when alpha_2 is 10^-6. See attached image. We are setting the _1 variables to 0 so that as many data as possible are kept. Then we vary alpha_2 to see how the final model is smoothed. Any ideas about what is going on?