panic mentioned some guidelines he felt should be observed to help aleviate this "phenomenum", if you want to call it that, in regards to camshaft duration.
Not a guideline at all, obviously no serious engine has a nominal intake duration below 240°.
It's a comment about something that happens, but evidently the results are small enough not to be detectable as a problem.
Vizard wrestled with a problem of similar nature but greater magnitude on the Mini (with different duration and firing order numbers, of course - the point of event overlap is only 180°, so the duration where both valves of a shared port are open is far longer with a given intake cam) to get past an effective ceiling beyond which more intake event wasn't producing the expected results.
His cure was fairly minor changes in the LSA and intake/exhaust bias between cylinders, depending on their position as early or late in the port's function.
