I tried to make some Maple Kettle Corn, but the syrup keeps burning. I'm wondering if anyone has any tips and tricks. Here's the recipe I used.

1/4 cup canola oil
1/3 cup popcorn seeds
Shake constantly
when the popcorn begins to pop, add:
3 tablespoons sugar
3 tablespoons maple syrup

I always end up with the maple syrup in a burned glob at the bottom of the pan, even though I shake it constantly.

Anyone have any ideas on how I can make this work? The stuff that didn't burn tasted great.