I have a Stock 96 Z28 M6.... the issue i've been having is: when i shift into gear it takes a lil while to actually engage. my foot is off the clutch but the gear is still not fully engaged, if i give it gas it just reves up and the gear goes in slow. once the gear is in if i try to floor it it will rev and the gear comes in slowly. It feels like if it's not in gear. takes time to get it going. could the clutch be going out? what would i need to replace?