Lets not get in a hurry.
When you are trying to start it, is it getting spark?
Take the plugs out and lay them on the heads and whirl it over.
If if is not getting spark it just might be the ign switch /connecting wires, as you say it is intermittent.
The switch and/or the terminals in the ign switch plug, are known to cause problems.
Check that and report back.
