NO NO NO NO NO!!!!!!!!!!!
It is NOT OK to run Kodachrome in E6.
Kodachrome is a very strange film which only processes in K-14, which was discontinued in 2010.
If you run Kodachrome in E6, the emulsion will strip off and you will get no image. plus, the Rem-Jet backing will clog the processor.
If you want this film processing, your best bet is to use someone like Process C-22 here in the UK, or Film Rescue in Canada.
Another way is to process it as B&W. PM me if you do not know how to do this.
Hope I solved your problem
Ektachrome