1994 gilera gfr

its getting there after fixing most of what the previous owner had done wrong for eg,put piston in wrong way round causing a lot of piston damage and at £125 per piston not cheap! also he put the power valve 180 degrees wrong its now in correctly, had the wrong main jet in carb, and a few other small things still playing with it on the whole a good little sports bike just a shame i got it from a prick!!!