i guess if it is a defect some like it but i dont. it never acted like this before and i have 2 others that dont throw open like this. i want my pump to go BOOM CHICK-CHICK BOOM REPEAT. might there be design differences through the years or cheaper parts that may cause some to open easier than others? i wonder how many have pinched hands and fingers from the forearm flying back. i will have to do a little more looking. im not done with this yet![:@]