Lol
If you can change a front seal on the timing cover,tail shaft bushing on a trans and can figure how to install freeze plugs.....you can surely install cam bearings. We have faith in you. If they get crooked...you just tap them straight. Just line the hole up and tap'em in. The metal shoulder is the point of impact..the collet just expands to exact size...the cone is optional but helps keep it straight...i never use it though. I just eye ball it and pop pop.. test fit after the 1st 3 then continue ..test n tap. Slow and gentle with the instal of the cam...no rush.