I need a little help. Running a 06 Blaster, DMC exhaust, vf3 cage, open airbox w/K&N filter and outerwear prefilter, 14t front/stock rear sprockets on 18" holeshots. Thing puts a smile on my face till my buddy flys past me on his CR250R. How do I at least keep up with him? Thinking LA sleeve 240 kit, port job, and all the other fun stuff that comes along with. Should I also stroke it? Just stroke, stroke and port? Any ideas/insight is greatly appreciated.I:I