Hot tub/spa: the various nozzles and hydro-jets keep coming off during use, where can I learn how to repair?

these? This is a PDC spa that is only 2 1/2 years old. I manage to "reconnect" the pieces only to have them flying about with the next use. When they are reconnected, not all of them have adequate output now. I can't afford $70/visit for a different 2 or 3 apart and flying about for the repair person. (No warranty because I bought the house with the hot tub in place.) Help, it's a $7000 hot tub that just doesn't work well.

Answers:
Most spa jets require a special tool to get them properly seated, I'm afraid. You can take an example of your jet ( there are many types) into your local spa and pool shop and ask them for the right tool. It can cost from 10 bucks to 50 bucks, depending on the make of jet.
It's not uncommon for some of these jets, particularly the rotary kind, to eventually work themselves out, even if you did manage to T tape them. I tend to shy away from T taping, as you may inadvertantly cover up the air injection holes, making that jet only spit water and no air.
The reason the jets aren't all functioning as they ought to at the moment, is that with even just one jet missing, that particular return outlet is the easiest route for the water to go. It'll steal flow from the others.

Edit: In answer to your additional details. Many jets on commercially made tubs, come from a source such as Hayward or Jacuzzi, to name just two. Rarely are these jet fittings made by the actual tub manufacturer. The only one that comes to mind, being HotSprings for example. Unless you can ID the manufacturer of the fitting, it would be difficult to find an online resource to get a tool. Your best, cheap bet is still to take it into a spa shop and have them ID it and go from there.
Sorry about my Email not being posted, but I was cyber stalked by a nut case in the Canada travel section of this site and have no desire to have it happen again. Sorry, he ruined it for me as well.

Other answers:
Use some Teflon tape on the fittings, that will prevent them from becoming dislodged.
Use some Teflon tape on the fittings, that will prevent them from becoming dislodged.
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