Thanks for this question!
For approximately 10 years Just the Goods offered the same type of pump and they were always very easy to unlock and re-lock while inserted into the bottle. For some reason that we're unable to confirm (Supply chain? A different model being offered as the previous one?) the pumps we have now, although they're the same manufacturer and appearance, need to be unlocked *before* they are inserted into the bottle.
We try to unlock all of the pumps prior to shipping; however, sometimes we're moving so quickly to keep up and ship a high volume of orders on time that we don't always remember.
In this silent video, you'll find out how to unlock bottle pumps *and* how to trim them if we didn't know which bottle your purchased pump was for, so we couldn't do it for you before shipping.
With respect to the straw length of bottle pumps -- we offer pumps for 4 oz and 8 oz bottles made from both plastic and aluminum. As you'll see in the video, the bottle heights and circumferences are different so, even though the large plastic and the large aluminum bottles are both 8 oz, the pumps fit into them differently. There is no need to trim the long 8 oz pump tube if it's going into the aluminum bottle, but you may need to trim some length from the tube if you'll be using it with the plastic bottle.
In the case of 4 oz bottles, pumps need to be trimmed: a small amount for the plastic bottle, and a bit more for the aluminum one.
We trim bottle pumps while packing orders if it is obvious which pump is intended for which bottle. If pumps are ordered without an obvious correlation, we apply a sticker to the paper bag noting on it a link to the video below. Please find here how to correctly trim bottle pumps according to bottle option.
Remember to always use sharp, clean scissors and cut in a direction facing away from your body.
I hope you find this helpful! 😊 Thanks!