Some of those chokes look like there quite well made, some look rubbish too. Well I'm going to mount the I-10K and see what happens and then i'll do what needs to be done if anything does.. All this talk about instaling chokes and isolating from the mast seems to have difference of opinions etc, i guess i'll just try one step at a time and adjust things if i need too..
Thanks guys for your time and replies
CBR is a lotta fun when you get it right.