Thanks JG,
Yes, some time ago I asked BOC for a kit to re seal another type of reg (not beer related) and apparently the kit was available but they would not sell it because they claimed it has to be installed by them.
I just wonder if I pulled mine apart and cleaned it, then it may be OK.
I might give it a go, after all I have nothing to lose.
In reality I can't see the difference between a qualified fitter overhauling the regulator at his home workshop or a qualified fitter doing the same job in their own workshop, unless there is special testing equipment involved.
Maybe someone on this forum will throw some light upon the mysteries of fitting a seal kit to a CO 2 regulator.
Cheers