Can someone help me with a simple answer regarding ratio?I'm new to these engines but not 2 strokes.My 2 stroke outlaw kart uses 16/1 mix of caster to methanol.I've been running this bike engine on a 20/1 mix with burris synthetic.This oil isn't cheap.It's for racing engines,not bikes.I've read on here people using 50/1 weedeater mix gas.What is the prefered mix ratio and best oil for the buck? thanks irefin