Slow down, there .....
First off, British jobsites often have 12ov systems ... with both legs 'hot'. These tools ought to work reasonable well on our usual circuits.
There ought to be service shops that will rewind the motors, if necessary. Such shops certainly exist "over there." The rpm difference can be a major factor in the performance of some tools.
Generally, I would suggest just replacing the tools with appropriate US models. This can't always be done; Bisch, in particular, has a number of tools for which no similar type is available in the USA.
