98goldform!

Well not exactly new to the site but first time posting anything. I have read a ton of posts on here over the past few months. Well to start my name is Lance and I drive a 1998 Firebird Formula that is gold in color, I think they call it sunburst gold. I have done a very few mods so far just a clear air lid, Hotchkiss LCA's, and panhard bar, the car already had a Borla catback with a Ory. I have issue's with the T56 trans so I'm hoping somebody can give me some aadvice. First of all its a rebuilt transmission and I think a stock shifter the problem I'm having is a shift grind from 2nd to 3rd and 3rd to 4th on the upshift and a little grind from 4th to 5th. I have already replaced the blocker rings, and shift pads, also had to replace a broken shift fork. I'm guessing my problem is probably the sliders but I'm not for sure and dont want to tear down the transmission again till I know for sure what it might be. I would appreciate any advice/help with this issue I have also checked the master and slave and replaced the master, I get plenty of pedal pressure so I'm confident its not either of these parts. Once again any help much appreciated

chevy11.6

no help here but you might try to go to the transmission section there is always some1 that knows