KRKR in Biblical Hebrew and in Ugaritic

The verb MKRKR appears twice in the account of the transfer of the Ark: And David mkrkr bkl 'g before the Lord... (Michal) saw King David mpzZ wmkrkr before the Lord (2 Sam. vi 14-16). The parallel passage in Chronicles manifests various changes including important ones affecting the word KRKR: and David mkrbl bmjyl bws... saw (Michal) King David mrqd vwmShq (1Chr. xv 27-29). In the verses corresponding to the two places in Samuel containing the verb MKRKR, Chronicles has two other words: mkrbl m.hq. This is commonly considered to be an example of replacing a rare word of unclear meaning with a more common well-known word related in meaning (mkrkr-mshq) or similar in sound (mkrkr-mkrbl) 1). It seems unlikely that the replacement of mkrkr bkl ' by mkrbl bm<yl bws may be accounted for solely on the ground that mkrkr mkrbl are assonants, for this explanation does not lend itself to the following change of bkl '. to bmnyl bws. It seems therefore that the change in Chronicles stems from the writer's desire to link the content of the first part of the verse wdwd mkrbl bmyl bwvs with the second part vw'l dwd 'pwvd bd, that material considerations rather than linguistic-stylistic factors have come into play 2). In this case the Chronicler has made no attempt to represent the verb krkr by a synonymous verb, therefore one cannot draw conclusions concerning his understanding of krkr. If so, what factors have contributed to the switch of mpgz va wmkrkr to mrqd wmshq? Is this indeed an example of replacing archaic, difficult rare words with simpler