A buddy of mine have a -65 XLCH, the bike was pretty unmolested but is currently undergoing a "back to stock" overhaul. When he pulled the cam cover the he found that the cams was marked: P1, XL2, P3 & P4. First we thought that the rear intake cam had been swapped sometime since obviously has a lot less duration than the front cam. A check in the books however gave us this, the rear intake cam has a -57 number while the others have -59 numbers. All the cams also has the same brown color markings.
Is this the way they came? And if so, what would the purpose for this be? Easier starting?