Thanks for advices, have to explore the settings more. It runs fine though. I guess I have to wait till snow melts a way.. Then I can start the proper tests.
I would like to hear other ppl's opinion too.
I just thought of why I lowered my brake settings. Sometimes under hard braking, if you go from brake to gas quick the motor will cog. Not sure if it will do it for you, but it is something you should be aware of.