I'm having some cooling issues with my 235. My engine was bored out .060 over prior to rebuiding and my stock temp gauge shows about 210 degrees after about a 5 mile drive. I've noticed that it "pukes" one time a little bit around the cap after a short run but then seems to settle down. What pressure radiator cap do I need? Should I be concerned about it running around 210-215 degrees? Would an external electric fan help with this? Any suggestions would be greatly appreciated!