i have a stock warrior. i am either putting 18 or 20 inch tires on stock wheels what sprockets do i need. i am also puting and a slip on hmf.je 85 mm piston what comp do i need. droping the air box puting k &n hot cam cam do i need stage 1 or 2. how far should i advance the timeing. banshee shocks. i mostly jus ride in feilds sometimes mild trails n soon racing at a local track on the occasion. someone please help i need your advice im new to the fourm btw