Pilsner malt is less kilned which is why it has more SMS.
I'd say if you know you'll get more DMS with pilsner malt in the winter, just avoid pilsner malt in the winter. That seems like a much cheaper, and logical, solution than getting a new burner or doing anything drastic.
Primary:Farmhouse Triple, Simcoe Session IPA, 100% Brett Brux IPA
Conditioning: Willamette English Pale Ale