While waiting for the carb rebuild kit to come . I thought I'll strip the carb down . Wouldn't you know it , the adjustable mixture screw was seized ....It wouldn't budge , so I had no choice but to drill it out !! Luckily there is a spring , so when I drilled down to the spring I could extract the offending pieces . l had s spare from and earlier put the carb back together . Reinstalled and had a go at starting ....away it went haha . Still along way to go but great outcome .