ProComp/Speedmaster aluminum heads

PRH said
Guides that are on the loose side won’t cause any real problems other than premature seat wear.
Tight guides on the other hand can be catastrophic.

If you can’t get anywhere with a sensible machine shop, then you’ll pretty much have to do it yourself.

Pull them apart, keep everything in order.
Remove any assy lube from the valves & guides.
Give them the wiggle test.
With everything clean and dry, there should def be discernible play.
But not sloppy loose.

Lap in the valves, look for a uniform shade of gray all around the valve and seat.
Don’t excessively lap the valves.
15 seconds or so is plenty.
If it takes more lapping than that, there’s a problem.

Measure the installed height of the springs, and bring them, along with a retainer to a shop with a high quality tester and have them tested at the installed height and the lift of your cam.

Straight edge on the decks.
I like them within .003 of flat for a 4 cylinder head.

Finish needs to be quite smooth for MLS gaskets.

If it’s all good...... put them back together.

I certainly appreciate your recommendation if I was to try it at home. Now I'm feeling a little in purgatory. Well I have a few dollars to take them to the shop to have them checked out to maybe staple a receipt to the slip of paper that says to check them out to keep any warranty valid. Both of the shops that I paid good money too and have done good work for me have both recommended not touching these heads. So they are out... For my hour of shop time it doesn't even sound like someone will even clean them up for me let alone Test spring rates do any shimming or anyting. No lapping valves or anything..