hey my nissin front brake resevoir just got hit from a big rock and now it seems to be dead, so i got another one, same model from ebay which looks in great condition. when i got it it had the lever and the brake line on it and the oil were still in, so when i pushed the lever oil came out from the hole on the other side of the brake line like it should, so i know this resevoir is defianatly in working condition. I installed it on the bike and connected both side of the brake lines, but when i try to bleed it, nothing comes out from the nipple, but i can hear some weak "squish" sounds. also, the lever just refuse to build any pressure, i can press it through all the travel without any feeling. so this is kinda weird, i taught maybe there is a leak from one of the brake line ends but it seems to be fine, (i think) so im clueless. any help would be appreciated, thanks!!