.cranklecat Posted: Threaded chucks have pros and cons, just like press-on chucks. Generally I prefer threaded chucks on mini pumps because they're more compact and put less stress on latex tubes.
I have had a valve core come loose on me once, causing a slow leak that baffled me until I figured out the problem. So now I'm in the habit of checking valve cores often.
Not long ago I was baffled temperrairelly by a loose presta valve core. I also found that it doesn't take much to separate the presta valves from the tube on those new very thin tubes. I solved this on my floor pump with the Silca Hiro chuck. Jaco makes a presta chuck that you push over the valve and push the top in to release it.
I want to adapt this to a mini pump.