entered your details here
https://www.bbastrodesigns.com/ronchi.html
You'd also need to tell us what your Rochi LPI are. I assumed 4 per mm, ROC of 840mm. Using this you seem to have an over-parabolised edge. I'd return to a sphere using the full-size lap with a 1/3 D stroke, offset from centre. Likely you still need to polish out the mirror anyway so this shouldn't take too long.