Rajul:

You are both right and wrong.

There are indeed some high quality plastic fittings available, my favorite links for anything larger than a 40 plane have brass balls, but the body is plastic.

And how many all metal control horns are there? Even the fancy metal "Bolt-throughs" have plastic parts.

However, the majority of the links supplied with the 40 size planes are complimented by calling them a POS. And the control horns are similar quality.

When you ruin them you are doing yourself, and the world, a big favor.

Bill.