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Should i Port and rejet? PICS inside

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I have my top end apart and am replacing some stuff while i am in there. I have a professional that will port this head for 200$ but honestly feel that i can spend that elsewhere with more efficient results. So my question is, should i clean it up myself with a dremel and the appropriate bits, or should i just leave it. It is not a bike that i am gonna cry if i screw up a little. I am really just more interested in learning.

Each intake and exhaust ports have ridges of casting flaws about 4-5 inches long and probably about .002-.007 inches in average height.

Specs on engine currently after this rebuild: 440 kit, new kb spring kit, hotcams stage 2, fmf exhaust, 160 main,

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