[T3] Injectors

[rheorojo at frontier.com (Tim Keohane)]

Is there a source for rebuilding type3 injectors? Mine are out and I see 2 plugs fouled. I've observed this for repeated tune-ups. If not, then I'm looking for new. Either way is fine. I'm certain my power loss and relatively low mileage (20 mpg) is the result of 2 faulty injectors. The power loss occurs as a gradual build up of carbon on 2 plugs. It runs fine after a tune up and new plugs but over time it degrades and I've lurked and checked everything but the injectors. I read them from the plugs.
Thanks in advance
Tim 
73 T3 auto