ArkZ,

The compression your experiencing is very desirable. If you are new to nitros, it will take some time to learn about them.

However, there's an easy way to start these. I don't know what kind of glowstarter you have. There's a company out there call Sonic Tronics that makes a "McDaniel Ni-Starter"
The bottom of this igniter that goes onto your glow flug is hex shaped, like a socket. You can use this glow starter to loosen the plug a 1/2 to 1 turn while you're starting it.

I imagine you're yanking the cord, and it's kicking and probably pissing you off. Loosen the plug, it will relieve compression, but it will start. Once it's running, use your Ni-Starter to firmly tighten it down. Do it somewhat quickly, as the more time you wait, the more fuel and gasses will leak through the threads making a mess of the head.

If you don't have a McDaniel igniter....then you can use a 4 way wrench before and after you start it. It's just another step and another thing to grab while you try and fire it up.

Once the engine is broken in, and you're accustomed to how much you need to "prime" this engine for cold starts, you won't need to trick of loosening the plug. It's easy to over prime these, and get too much fuel in the case, and have trouble pulling the string, kicking back, etc.

Run this thing rich until it's broken in. When you're driving it around, you want to see a nice belch of smoke when you advance the throttle.