Taurus Engines does work on those engines as well. see their web site.
Get rid of the 32:1 go with at least a 50;1 Klotz or Stihl oil
check the timing to set it 28-30 BTDC, set the plug at .022-.025
FWIW I would get a newer updated C/H
There also could be a leak in the cylinder head gasket.