Here's a link to the glow plugs. It comes at $3.90 for 1 or $2.90 each for a sheet of 12.

You will be surprised how much better it runs with one exhaust stack plugged. The type F glow plug works great they just seem to not last that long for me. The 1L is the perfect heat range on 0% nitro.

https://shop.mecoa.com/shopdisplayproducts.asp?id=81