this is my 2nd post and i am a newb so sorry for any dumb questions i have. this is my first motorcycle project....i just bought a 72 cb350 last week. its all original and in really good shape. it hasnt been run in about a year but previous owner said it ran before he let it sit for a year in the garage. now I cant get spark on either cyl. the battery was dead so i took it out, that wouldnt cause it to not spark would it? what should i check first?