some one told me not to run the spark plug washers on my 605 hemi because the tube acts as a washer. what do you guys think about that

I've been doing my Hemis that way for a very long time

It depends on which valve covers and which spark plug tubes I have ripped the bottoms out of the stock tubes using two valve cover gaskets to make rocker arm to V.C. clearances I seem to remember the Mopar drag racing seminar guru recommending NOT using the spak plug gaskets in the 426 Hemi, no matter what

Yup, discard the metal ring gaskets; they chew up the tubes. I'm referring to stock covers & tubes.

thanks guys i am glad i listened to john and keept them out