seized lower leg adjusters how to fix

[nickodemon]

I had a gen 1 that had seized adjusters and tried soaking in silkopen, also using heat spray and freezing spray. i soaked them for days and even used my blow torch and couldn't get them to budge. I gave up and gave them to a bike shop. They gave them back saying they were freed off, but what they actually did was free off the aluminium housing so everything rotated