i recently went into a sex store the first time and bought a penis pump. i didnt have much cash on me and i was embarassed to be in there so i got a bulb pump. ive been reading the forums and know that this kind of pump isnt the best, but i was low on cash and just wanted to experiment with an inexpensive pump. i tried it out and i noticed that when i pump i dont feel much of a suction feeling. also in between pumps my penis almost shrinks back down instead of going up or going width wise, but then goes up with the next pump. the pump didnt have much instruction but do i need to tighten the quick release valve next to the bulb or what? thanks.