Any attempt should be performed with the AC plug locked out, taped up and in your back pocket - looks like a sure way to get zapped otherwise.
Have run a couple more cycles with the change - the grill will run up (at least) to an indicated 600f. Max before was about 450-475 (summer) and 500-550 (winter). Without preheating beans, grill roasts faster/better. With preheated nuked beans, faster still. I think the shorter roasts are an improvement.
Ran 18 oz. of Smithfarms Kona (pre-nuked two minutes) to just before second crack in 14 minutes, ambient 35f - made a very nice pot right out of the roaster. Should be stunning tomorrow morning.
(Remember, you take full responsibility if you mess with your grill)
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Quote of the day..." Drink Good Coffee. You can sleep when you're DEAD! "
author unknown, but passed on to me by Robert Holland on the Homeroast List--Thanks!