Where can I find a Breckwell Big E CAST Burnpot?

Do others find that the burnpot warps, cracks after 3 years of use? Not sure if this is a common problem but it is one that I am experiencing. I prefer the cast burnpot over the newer stainless steel burnpot because the cast will last longer for me. Anyone have a clue to why I am going through burnpots every 3 years, burnpots are not cheap! Thanks

Added pics of burnpot! Help!

History - I replace the door and ash pan gasket every other year whether it needs it or not and do check for air leaks on a regular basis, I clean the exhaust motor blades evey other month, I use the leaf blower trick, have an end cap on exhaust pipe for cleaning, remove the 2 plates and clean behind the firewall every other week. I do believe in having a clean stove as stated on this forum. Shut down the stove and clean about every 5 days depending on what pellet I am burning. Also when cleaning I remove the burnpot, scrape, wire brush and make sure holes are clear. At a loss why burnpots are warping so quickly...Thanks for the help!

Hi Jay, mainly #2 setting. When temps drop below 15 degrees I'll bump it up to #3 setting. Only time I use the #4 or #5 setting is after I shut the stove down for cleaning to warm up the area faster and no more than an hour on the higher setting. I do run the stove 24/7, no thermostat. Stoves been great, minimal issues it's just the burnpots are not lasting, getting a little more than 2 years per burnpot. Is this something common with Big E?

Yes agree Jay, I do scrap the burnpot at least twice a day while the stove is running, I should have been more specific. Give it a good scraping wire brushing etc when the stove is shut down for cleaning. Thanks