Tech myths:
1. A FPS loss is a worn spring.
No, after 800,000 rounds and being stored in a compressed state a modify AEG spring will lose 7% of its charge in two years. Not enough to lose any significant FPS.
Some brands wear faster but a FPS loss is a compression issue. Unless your spring broke in half.
2. High speed gears always make your AEG gain RPS.
Nope, only by dropping spring load A LOT or increasing motor cycle rate will you gain any RPS with high speed gears.
3. More lube is better!
You can always tell when a new guy teched a gun by the amount of lube in the gearbox
4. Higher FPS is just a spring change away.
This is where techs make a lot of money. The do-it-yourselfer that attempted an upgrade and failed. You must be aware of all the subtle things and a perfect ability to tune the gear box. Some things need replacement, some can stay.
5. You can study to be a tech.
YouTube is a great starting point but the only way to learn is to do. Airsoft teching is not a technical science – IT IS AN ART. It takes time, a lot of it.