1998 Honda Accord Q&A

1998 Honda Accord Question: Why does first thru fifth gears slide in smoothly but reverse wont even shift in

The transmission was just put in but it maybe something to do with the clutch i guess. A little bit of noise from shifting but once running for sometime it stops. The gears can be some what stiff but not noticeable. -
Answer 1
Re-built , reman. , or used trans.? Was anything done with the clutch assembly while trans. out?? -