First Rum Run- Burnt?

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I ran my first Rum run using PintoShine's T&T wash recipe with 3 G of molasses for 13 G of wash. My only deviation was using regular molasses rather than blackstrap molasses. It fermented in 36 hours as the recipe claimed. 1.090 OG 1.010 FG

I ran it slow on a Mile Hi 16 G boiler with a 4 plated column. Proof started at 178 after disposing of foreshots. Around 120 proof, I started picking up a burnt taste that built with each successive pint jar. The still has electric elements and I was probably running 1200 - 1500 watts into one element for most of the run. I didn't see any scorching evidence on the elements when I cleaned the still. I would also say the dunder smelled a little burnt. Resting for two days has not changed my perceptions of the flavor.

I didn't rack the wash into the boiler but I would say I kept at least 90% of the yeast residue out of the boiler.

Any ideas what might have gone wrong? Is there any way to recover? I collected 20 pints down to 20 proof.

Thank you!

NF