As with everyone in this sport, until a problem happens to you and your investment, you are fine with what you normally do and how you set up your planes. But many of the "over engineering" pilots have gotten that way due to a loss of their efforts and money due to some failure.

I check glow plug tightness after every flight on all my racers now, cause I had one pop out on lap 10 and cause me to put the plane in at a bad spot.

I like many have gone to the line and went to start and, "no fire" , so now I check to see if the plug will lite before I go to the line.
- Im sure you all do this now as well for same reason.

I check prop tightness after every flight to avoid throwing one or allowing spinner to cut into prop.

I thin glue the control surface areas now to avoid stress failure there.

I foam mount all my 2.4 rx's as well as satelites. Why? Becuase I almost lost a 42% F1 Racer and did lose a WM gold warbird racer due to Rx failure. I dont think it was the rx's fault but rather that I just velcro'd it. These need foam to protect them just like 72Mghz did.

I had a full time racer tell me he pulls the glow plugs "out" and checks them cause he got a good reading due to a faulty starter one time. It would read good in the engine, but when he pulled it out, it wouldnt lite.

All these things and more I do from a personal loss due to "Not" doing them.

I have run standard sevos in my WM Gold planes as well. But on my higher end($$) gold planes I'm not going to risk it due to what others have had happen.

The way I look at it, other than from a safety point, "the more $$$ I have in it, the more I am willing to protect it, with-in my budget's capability".

Do what you feel comfortable with based on YOUR financial investment. All these guys have great experience levels and personal opinions that aught to be heard. But it comes down to your choice, your money, your convictions.

From a safety issue and history's lessons, I would do all I could, to secure the life span of these planes, and the personal safety of those in the area.

Its all the little things that makes a plane faster. Its all the little things that makes a plane last longer. Its all the litlle things that makes a plane safer.