HI THERE
I have not run brushed to the extent you have but i would recommend brushless any day.
I run 2wd and i run a 7.5 t LRP either lrp speed passion there are loads.
you can adjust the timing on most race spec motors either on the can or with the ESC
If not all brushless motors are censored and will require a brushless ESC
The thing with these motors is they are very smooth they deliver the power much smoother and more constant. They dont get as hot and need no maintenance what so ever.
They are suited to all types of track big, small, tight, loose indoor out door etc etc
I would advice to move to brushless. But the only down side is if you do enjoy the comm work etc then you best stick with brushed
