hi all expert pump dons....
I've been pumping with a small tube for a while, and I'm thinking of stepping it up a notch..
My question is....
Is it worth doing a mod of a jar to make your own 2 stage, or is it really worth buying 1... and second question:
What's everybody's favourite 2 stage?
Thanx!
55
advice on first 2 stage? X
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