Too much oil in the mix? Having run at 25-1 and 32-1 etc.,-I have not yet seen "too much oil".
Mixture setting is easy at these blends - and power is terrific-
The thing I really like is the nice "smooth" feel of the engine - - and easy starting etc..
The 32-1 or threabouts -- seems fine on the Mobil 1-and other pure synthetics .
My weedeaters and leaf blower like it too.