Thanks for the tips chaps, but the collector part is looking pretty ropy and I am looking to fit stainless headers when funds allow, so I need to sort out the nuts/studs anyway. Thing about the Yamaha nuts is, they are rusty as hell so they must be made out of recycled Austin All AggroGhostcat
Dont be in any rush and keep soaking those nuts, I used a syringe to get right in there
refitting fzs600 thread has this in but will add in here for futureapparently ATF and Acetone 50/50 works greathttp://www.youtube.com/watch?v=CESDxCloCoQif anyone trys it before me then please post here and let the world know
In a reckless fit of curiosity, I decided this morning to see if my header nuts would come off without snapping any studs. I thought I'd just go at it really gently and if they don't move I'd leave them for the moment and worry about them when I need to but if they do I'd remove them one at a time, fill them with CoppaSlip and replace them. Well I'm thrilled, overjoyed, ecstatic, pretty relieved to report that they all came off with no problems at all.