i have a 220 bayou and i had to get a new cam cause my old one was worn out. i noticed the only way the oil gets into the head is through 2 small holes in the lobes of the cam they are both alittle more than 1/16. would i be able to drill them out to 1/8 or would that hurt it. also does anyone know if the oil pump on the 220 could handle having a small oil cooler added going to the head. does anyone know how much oil it can pump per minute and what pressure it pumps at?