Hey guys, I have a question regarding starting a nitro engine that's been sitting around for awhile.
So I finally got to working on my Duratrax 835B after 3 years and I'm getting ready to fire up the engine. It still has good compression and is in really good shape from the inside. I will be using 20% fuel, so is there any precautions I need to take before starting it up? Or can I just go at it and work on re tuning it?

Also I have a Losi XXX-NT on the way, and I don't know how long that engine has been sitting or what condition it is in, I may try and start it up but first I have to wait till it gets here.