I don't see the post in which it was suggested that you "snug(ged) it up round-robin with the bolts". If by this you mean that you pulled it in the last 1/4" by tightening the bolts in an alternate pattern, I have to say that this is a easy way to break the bolt ears on the trans or do other serious damage. If you did this and got away with it, you are very lucky.
If you mean that you ran the bolts up finger-tight, wiggled the trans around by hand and got some more free play in the bolts, then finger-tightened the bolts again and repeated till the trans was up tight, that's fine.
I disagree that headless guide bolts are useless. They can't possibly hurt, and can help prevent you from dropping the trans on your head or chest. They make it much easier to line up the last inch or so.
Glad you got it in, and I hope you don't hear any strange noises when you start it up and step on the clutch.
Joe
