are you 100% sure you got all the air out of the system? I did the whole clutch bleeding thing with simmo7 week back and initially we cracked the nipple, pumped the shizen out, retightened the nipple and it was still falling to the floor. There was a second nipple attached to the slave cylinder that we cracked, pumped the peddle and retightened the nipple once again. It now has about 90% pressure, must still be a little bit in the lines that i need to expell still but eh, it works for now