Englander PDV25 Trouble Starting!

My Englander PDV25 has been having a bear of a time starting up the past couple of days. Everything seems to be working, augers are spinning etc. but it won't spark. I've made sure that everything is cleaned out but it's still not starting by it's own. What could be wrong and what should I do? I can start it with a bbq lighter but still...that's a band aid and not fixing the actual problem itself. Any help would be appreciated

No, I don't see the igniter glowing like it used to.

Okay, so i think i got it! I was about ready to run to my Pellet Service guy and pick up a new igniter but I kept looking at the igniter on YouTube and looking at mine and it looked like mine in the back was sticking out too far so I loosened the screw holding it in which didn't take much and I pushed the igniter in until it was flush and re-tightened the screw. I looked in the front of the igniter tube to make sure it wasn't touching metal and it wasn't...about 1/8" - 1/4" from the hole opening so i started her up and we have ignition once again! I'm thinking over the course of 5 years of cleaning that out with a screw driver or similar item that the igniter loossened and got pushed back inside the tube too far away from the opening so it was in fact heating but wasn't close enough to ignite the pellets. Crossing my fingers that I found and corrected the problem .