I was relieved to see that I wasn't the only one...today, after holding the wire harness horizonally (the one that goes to "ignitor" on the module) it stopped working altogether. After jiggling and pushing even harder, I was able to get it to work. But only once. I am looking for any advice on this, but I think the only thing to do is replace the SV9500M unit
Thank you to everyone who shared I'm glad I'm not the only person rigging up wires in my furnace!