What Have You Done To Your Tdm Today?

[schmo9]

What have I done to my TDM today? Well, whipped off the pipes and collector box (chr*st they weigh some!) and took off the nuts from the studs in the head to remove the front pipe. All four nuts came off, the collars are both loose around the outer studs but NOT the inner - result - front pipe still firmly in place. Gentle leverage not working, obviously concerned about doing something which might compromise (ie snap off) the offending inner studs  - I have traumatic memories of doing just this to a water pump on a Mk1 Golf Gti way back in m'youth- so, folks, any suggestions please? At the moment I am slathering it in more WD40 and waiting but is there a more definitive technique? 

I had this issue on a FZR 1000 I'm currently rebuilding. WD not too good for this, try 3 in 1 penetrating fluid. I ended up using a large flat blade screwdriver to lever under and try and get the collars moving and applying more fluid as I went. I was replacing studs and exhaust so I didn't mind about any damage incurred. You might need to try and get studs moving if you can get two nuts to lock on the thread...long shot but worth ago if yer stuck.