Your problem is not very clear. Not even after looking at the pdf...
What are "X pieces" ?

The pdf shows exactly 2 parallel tracks, so if you are building that example, then it should not be strange to end up with exactly that. :-)
The points used in the pdf are of the 51xx type, those use R1 30º turns, with NO equivalent existing for C-track. (old Alpha track uses this geometry, though...)

If you use larger curves, the distances must be adjusted with additional pieces of straights, and the dimensions of the layout will be considerably bigger, for diagonals laid at the same angles. But as your C-points will put the diagonal in 24,3º, the layout will again be much longer!

You could try to get hold of other trackplanning books with "better" examples, or try it out on a computer; SCARM is free, and you can even use the WinTrack demo version (no cost) to check out these kind of things.

am pretty sure that the problem lays with you trying to place C track pieces on an M track PLan??

Hi

If you use 24611's & 24612's on the end of each leg of the 24649, then you will get the geometry you're looking for. How long you make each of the four 'legs' will depend on your radius at each end.

The matching turnouts for the 24640, would be the slim turnouts, 24711 & 24712. (Don't forget the little spacer tracks for these turnouts, 24071). You will need lots of space to get something similar to the pic you mentioned using these slim turnouts.

(Sorry not able to post a pic.)

Hope that helps.

Thank you, everyone for your time and effort !

From what I see, Hoffman has the oval I am looking for

I can't read well the numbers around the crossing. Is it possible to have a list of the tracks used?

Is the number at the bottom the length? 2 m 603 mm?

What does the orange little circle mean?