You need to use penetrating oil on it, not a Water Displacement fluid
like WD40 and you have to have the proper sized driver to fit the slot
exactly or it will just bend.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

hemyd wrote:
>
> I have an old car with a low speed jet which is probably damaged (Darwin
> award stuff, so I won't go into how it happened). This is the primary barrel
> of a twin barrel carby. I am trying to remove the jet and replace it. I can
> easily unscrew the cover, but I cannot budge the jet screw. It is made of
> brass and the slot starts bending when I try to unscrew it. I've tried
> tapping it and used WD40, but no go. Is there any other method I can try?
> Any advice would be appreciated.
>
> Henry.