360 Advice Needed - Autocross / Street Engine Build

One issues I've been having is getting the valve stems thorough the guides.
Seems to keepers have mushroomed the stems a bit and those guides seem very, very tight.
Filed / sanded one pair a to get them out.

The port shapes seem good, edelbrocks factory goes a little heavy on the grinding on the short turn, but can't reverse that now so will work with it.
Looks like the pushrod holes and the center head bolts are going to need brass sleeves to get a straighter shot on the intake though!