I am leveling Alchemy on a Mule and Facing NE on Lightday I skilled up from 18 to 19 in 10 synths, I did 22 more synths and did not gain a single .1 I just checked both Somepage and MysteryTour and they both list this synth as capping at 19.
Edited, Tue Aug 16 22:09:10 2005