Hello everybody.

I have my 2 profiles (slightly different) and my rail in the form of a drop. Somehow It was built by a 3 points arc (stage 1), mirror the arc (stage 2), and then again a 3-points arc (stage 3). I have built the shape also as continuous arc, first doing the bottom arc, then one continuous arc up to the pointy side, then mirror it, tried otherways too.....numerous. did some tiny continuous arc to the pointy tip, because this is where the problem is (rather than a clean intersection).
Anyway, can somebody enlighten me where is the mistake here for a clean, solid sweep?

Thank you for your time.
Rudy