clutch doesn't grab 3rd-4th
 

when i shift from 3rd to 4th my clutch doesn't grab right away. 1-2-3 seems to be not bad but after 3rd if i shift quick and get on it right away it doesn't grab right away rpm's start climbing and then it kicks in. Stock clutch. think it just needs to be adjusted or something or should i switch it out. I have a spec 3 clutch and flywheel already.

slippage. higher gear+more gas= more drag for the clutch disc.