I would drill and roll pin those gears to make sure they do not slip time if the screws come loose.
I would also loc-tite all those little screws.
What did you wind up setting the cams at?
I was thinking about pinning those gears but Ive never heard of that happening to anyone maybe I will anyway just for insurance. Loctite is a definite on those. Didnt degree the cams yet just set them up with the factory timing marks...Im waiting on a valve spring compressor to make it a little easier swapping the solid adjustable lifter around.