The mc cylinder was fairly close I added only one green gskt to the original factory setting of two gskts in order to have the top of the piston completly expose the exhaust port at b.d.c. I did not concern myself to much that the transfers where still not completly open @ bdc but focused more on matching the cases to the cylinder by gently blending the two, same with the exhast spigot and port. At this point I have had to go up two main jets to provide the required additional fueling.The guy who did the crank for me did a really good job as the engine has very little vibration at all speeds. Perf wise did a couple of second gear to top speed roll on comparisons with my friend Brad who rides a tight 04 cr -250 and weighs about 40 lbs less, pretty much neck to neck.
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