2005 Dodge 1500 Manual tranny problem

Hi, I am somewhat of a newbie here. I have a 2005 Dodge 1500 v-6 with 6 speed manual trans. I am having a problem shifting from 1st to 2nd and 3rd. When I shift into these gears, there is kind of grinding and it wont go into gear until the rpm's come way down. I already checked the fluid in the master and slave cylinder and they are fine. The truck only has 44,000 miles on it.Any info would be greatly appreciated.

Thanks,

Ray

could be your throw out bearing but depending on how you drive and harsh on the tranny it cold be in the tranny itself gear kits are cheap

call the dealer check if you have a lifetime powertrain warranty