Redline is costing me $120 delivered from Harold @ performance hub.
Give it a go first. If it fails to fix it (I doubt it from what you're describing..), then rebuild/buy another, fill with redline from get go.
With the reverse thing, it could be the clutch cable stretching, making the friction point move to the floor and beyond? This happened with my M3 after a hard day out. New cable, $20 and it was sorted.