This has nothing to do with the topic, but allow me some comments on your sketching. I had a look at "end profile":
- You almost never need dimensions of 0. Use constraints such as vertical or horizontal or point-on-object or tangency instead
- You should prefer geometric constraints in favor of dimensions
- Have a second look at your sketch if equal dimensions occur, also exact halves of dimensions are suspect
Furthermore there is a bug in the solver which makes it assume that your sketch is fully constrained, which in fact it isn't. The leftmost vertical line can be moved freeely in horizontal direction. (I should add that I don't have a2plus installed.)
I could change your old version containing 7 dimensions (where one more was missing) and 15 constraints ...
... to a sketch using only 3 dimensions and 12 constraints: