My youngest daughter will be a high school junior this year and the older one will be a junior at University of SC, go Gamecocks. After years of driving them to various activities including soccer, track, cross country, marching band, swim team, etc, I think I finally have time to start flying again.

I've started going through my beater plane to get it ready to fly again. It's a World Models Combat Zero that I bought over twenty years ago. To say it's ugly is an understatement. The only resemblance it has with a zero is the green color and the red rising sun emblems. However, the plane flies great and has been very durable. I call it my beater plane because I've flown it hundreds of times, don't baby it, and it just keeps going. When this plane finally meets its demise, it happens to all of them, I also have an unassembled WM Aircombat YAK which has the exact same shape but different color scheme to replace it.

I originally assembled it with an OS .25 FSR but swapped that out with a .32 FSR. The .32 has been an amazing engine. If I fly it with a 10x5 prop, it takes off in an instant and will climb forever. Swap that out with a 9x7 or 9x8 and the plane is remarkably fast. The overall weight is low and slow flight is very predictable.

So far here's what I've checked:
Thorough radio checkout. Over the years I have occasionally charged the transmitter. It's holding a good voltage but to be safe, a new battery pack is on the way. The same goes for the flight battery. I've gone through all the control surfaces to confirm the servos work right, that they're moving the right way, and that the linkages are sound. I also confirmed that the hinges are solidly anchored.

Engine and throttle movement. At the end of a flying day I always ran out the fuel and added Marvel Air Tool oil to lube it. It turns over freely, the bearings feel good, and compression is still strong. I'll install a new glow plug before I fly.

The fuel lines are still good. I need to flush the tank a few times just to be sure it's clean. I don't see any gunk when I do a visual inspection, but I can't see all of it unless I remove it.

Now for the questions.
First, I have several APC props which I have never mounted. They have been stored in the house since I bought them so they have not been subject to excess heat or cold. Do these degrade over time or should they be ok to use?

Next is fuel. I still have a full bottle of Omega 15% from a long time ago. Is it worth trying some test runs at home with this, or should I just recycle it?

An finally, what else should I go through before I put this in the air again?