I have a 2008 Quadrafire Mt Vernon AE wood pellet stove which is giving me trouble. in the last few years igniters have been an issue as well as the vacuum sensor but overall it has run pretty well. However, last year I had to replace the board and the vacuum sensor and I burned out 4 igniters (burnt holes in side of them) and have had to replace the fuse each time as well. Any idea what could be causing this issue and what the proper steps would be to repair? Obviously, replacing igniters and fuses constantly indicates there is a deeper issue that needs resolution.