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What you did was broke off the metal tab on the cam that lines up the CAS properly.
Now... this tabs function is not to spin the shaft on the CAS, its just an alignment aid. They CAS actually connects to the cam via splines cut into both.
Now, this is where it becomes very hard to describe, but easy to show...
1) look at the CAS from the back. Take a black sharpie marker and mark where each one of the splines are cut on the inside so that you can now see where each is.
2) Now, take your finger and feel inside on the end of the camshaft. When that tab breaks, it does not break cleanly. You should be able to feel that half of the spline on the end of the cam is perfectly smooth, while the other half is rough (where the tab used to be). Take your sharpie marker and color over the roughness so it will be obvious to your eye.
3) Now get your face down there and peek in, and mark where all the splines are. You'll be making your marks on the little square shaped washer on the exahust cam sprocket.
4) So now, what you are able to do is sort of "see" where the tab used to be.. Take your sharpie marker again and make a notation to let you know which spline was in the "middle" of where the tab used to be on the cam sprocket. For example, put two dots, one on each side of the line you drew for the spline.
Do the same thing on the shaft of the CAS.. but this time make marks to let you know which spline is in the middle of the "hole" in the back of the CAS that the tab used to slip into.Now, when you go to install the CAS, you should notice that the lines you drew on the CAS shaft match up to the little black line marks you drew on the square washer on the exhaust cam sprockets. Twirl the shaft until your two "notation" marks line up, so you know the tab would be in the right place. Slip the CAS on.
If you were very exact in drawing your lines etc, it should slide right on there. Shit I hope all that rambling made some sort of sense.
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