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I completed the LN IMS retro-fit yesterday. (The Sergeant Major said I could spend a few hours in the garage) I did so without the set screws having the engine and cam lock as provided by LN. I did as Wayne suggested though, marking the other cams with a sharpie as some additional insurance. No problems, smooth install. The sprocket did not line up anyway, only one hole had metal behind it. I understand the overkill mentality though. JFP and Cnavvaro suggested the set screws may be problematic as the sprocket is press fit and any pressure applied to the sprocket may cause it to cant, giving rise to premature wear of the sprocket or worse case scenario having the chain come off completely under load (6800rpm).
I think as long as you follow Waynes' advice and are careful not to torque the set screws too hard you should be fine. Insure you torque them evenly, if you decide to use them.
I have 25 set screws on the way, if you feel you need a few let me know.
Thanks to Wayne, JFP, cnavvaro and the other posters for their advice, even taking the time to clarify when my thick skull got in the way.
Now on to the Flywheel and clutch.
Best Regards, Z
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