i replaced my clutch throwout bearing pressure plate fly wheel slave cylinder master cylinder and shift cables and now I can't shift into gears. I replaced the fluid it went into gear when it was jacked up I only jacked the front end up so I put it down level and put more fluid in to be level and with the car on the ground I can't get it to go into gear when it's on. When the car is off I can't go through all the gears but when it's on it won't go in. I can start the car in gear and hold the clutch in and it doesn't creep forward or anything I can drive but I can't get out of the gear. There's two drain plugs. One is on the back of the transmission under the fill plug and the other drain plug is on the bellhousing but I'm not able to find a full plug for that. I opened it and there's no fluid could that be the problem?