Ha, Ha, yeah , spent a number of years on Oil rigs on the north sea as a pipefitter so no stranger to the use of large heavy objects for bashing pipes.

Thanks for all the good suggestions,

Have given the bars a little touch with the grinder but the bars aren't thick enough to make the gains I'm looking for.

I was going to hire a set of oxy/acceteline bottles to give it a red cherry heat up then screw down the control assembly in the hope the master cyclinder pressing against that part of the bar will flatten it out. But hiring stuff costs money, which is why for a lot of us it is cheaper to buy than make

I had thought about taking a bit out of the clamp and master cyclinder, but wasn't sure if there was enough meat on them for this to be a safe option, but if someone else has done this I will get into it with the file, a cheaper option is always good.

Did you need to take much out of the master cylinder, thinking this must be a problem for quite a few