Got this old girl running the other day... Then, after I had it running a bit and it seemed to be OK, I turned it off, cleaned up the garage and went inside for the night. Yesterday I went to try and fire it up and although it turns over fine it wouldn't start. I pulled the plugs and no fire at all on either plug. This old bike has been sitting a while so could the points/condenser have gone? Coil? What should I check first?