[86911TLCAB]

So I am taking the plunge and attempting to rebuild a cylinder head. have a couple of questions:

1. Valves--I have 5 bent exhaust valves and 1 bent intake valve. the valves are obviously bent at the head of the valve, but the stems seem ok. when I put a good valve into the same cylinder there is little to no play (equal to the valves that are not bent). i am presuming there isn't an absolute need to change out the valve guides as long as there is no play. True...or false?

2. Some of the videos i have watched show each valves spring/keepers/etc being kept together. Does this make any difference?

3. I have some very slight scoring on one of the camshaft journals (proper terminology). can this be removed with light polishing with 220 or higher sandpaper?

4. The head i was given (thank you Jeff/Hoophead) is really clean and looks great. I will likely take it to a machine shop just to verify it isn't warped and press on to put it back together. Is there a benefit to having it chemically cleaned?

am sure there will be other questions and any assistance is always appreciated.