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I think he meant to type, "you *can't* make vacuum with two open 1" i.d. lines", hence, the flappers. The flapper allows pressure to escape when...
You'll be fine. 5.13 gear does have a small pinion, but you should be okay there as well.
x2 and for the same reason...
paint strainer works for us (the kind with the fine metal mesh)
