An update on this. I stripped the carby last Friday (and the ruined the intake gaskets in the process) and once I took off the float bowl it was full of rusty browny fuel that had been sitting there for years.. basically the inside of the float bowl and all the jets were covered in this stuff! I carefully cleaned everything with carby cleaner re-assembled and bought new intake gaskets and she started firts pull!
Very happy with the results and thanks to everyone for their assistance!
