What am i doing wrong? Few years back i changed all valve seals which were Athena i think. In next service i found they all were backed off, so i bought originals and changed them. Now some 20 000 miles later i found them lifted off valve guides. I don't have original tool for assemble them, but i made tool from small bolt to pull them throug valve guide and it works just fine. I lubricated the seals by motor oil and pulled them until they bottomed, still they don't stay. Should i glue them or what?