No to moving the k frame ! That would mess up a bunch of stuff.
You could try using a humongous pair of channel locks "really big" , to squeeze tubes for clearance, be sure to insulate w/ something to quard against teeth marks, I did a couple of tubes on mine , w/ a pair of 18'' channel locks , but you will need bigger most likely. Of course you`ll have to mark the header and pull it out to do this .
