How to clean fuel injector pods.

Ok, So I need to replace the fuel pressure regulator on my 89 4.3 s10 4x4. I got my hands on good condition tbi unit with 1 bad injector. Out of the two units I want to put together the best unit I can. The
new tbi is a refurbished one, it has been cleaned, painted, new IAC, TPS, a working fuel pressure regulator. One working injector pod, and One non-working injector pod. On my old (current) TBI unit, I believe everything is working properly except for the ruptured fuel pressure regulator. A few questions
1. Am I better off using the old unit, and just replacing the top half, fuel meter part, which includes the fuel pressure regulator? Or am I better off just taking one of the injector pods from the old unit and installing it in the new unit and using that?
2. Can I mix the injector pods, or are they better off staying in pairs?
3. While I have it apart is there a way to clean out the injector pods really good? I think I read some where a way of placing the pod in a bowl of cleaner and attaching it to a battery to make it pulse. Any help?
I kind of feel that it is 6 of 1 and Half a Dozen of the other. Either way I have to disassemble them equally and I have been playing around with my new unit and its pretty easy to take apart and put back together. Part of me feels that if it ain't broke don't fix it, and I should use as many old parts as possible. And the other part feels that if I have new parts and its all taken apart that I might as well put the new parts on.
Thanks
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jiimi wrote:

Pull the injectors from your old unit and put them on the newer one. That way you have two that you know work.
--
Steve W.
Near Cooperstown, New York
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