If you have to move it, try to not put it back where you started. We did a temporary install with ours while we built the addition where it was going to be permanently installed. That was enough for us to realize that we didn’t want to move it again before it was time to take it to the scrapyard, so we installed it with enough clearance to be able to work on it. (Although it’s getting harder as I get older and less flexible!)
I don’t know what model of Harmon you have, but changing the igniter on ours (PC-45) was pretty easy.
We’re in Saskatchewan. There is an amazing dealer in Yorkton who mails out any parts we need and who offers lots of really great usage and troubleshooting advice. It’s not like having a local dealer who will come out for service, but it’s better than nothing. Country Hearth & Comfort
If you find you’re going through igniters, you might have a weak air pump. Insufficient flow during the ignition cycle can cause slow ignition. That means the igniter is running longer than it should, reducing it’s life.
Ok, good luck!