Hi Rev, I'm interested in the moving the Glow plug deeper into the cyl. I believe this would help the low idle also. When you make one would you sell me 1 with a 14 mm metric thread for testing in a Poulan 25CC weed wacker motor? I'll buy it of course and pay the shipping. Have you ever thought of useing 2 glow plugs and seting them like the old MX bikes at a 45 degree angle?