ElPaso made K-4 and (less frequently a K-6) comes up for sale on the classifieds....prices run $150 give or take and unless the one you have has sentimental value, you're best off just replacing the entire rig.
I've owned my K-6 for 52 years now and it's still as good as the day I bought it.....and I got it used....they are a classic worthy of anyone's hard earned cash.
Last edited by vapodog; 07/04/13.
