I haven't used a 2k in mashing but I thinking the scorching issue comes from people not cleaning their elements between batches, to be honest.
You didn't say what size batches you do? 5? 10? How much power is available? 120V or 240V?
On Tap: Crossover beer, Sour Elderberry Stout, Weizenbock, MO IPA
Aging: pale sour solera, yeast bay lambic, dregs lambic