thanks UCyborg for the palefill xpi and the structuredClone script.
works well in NM28 and 360chrome 13.5 with violentmonkey. ( default template )
had a question about setting this for all sites ( // @match *://*/* )
from the polyfill link NHTPG posted i think that is correct.
test can be done here :
https://www.measurethat.net/Benchmarks/Show/18967/0/structuredclone-test
thanks again UCyborg for the valuable input and also NHTPG for the additional info.