Lost 3rd and 4th gear in new transmission

[Phoneguy]

I was cruising down the highway to get a safety inspection today and the tranny started hunting from 4th to 3rd after about 16 miles. I Shifted to manual 3rd gear and less than 10 miles later it is hunting from 3rd to 2nd and then lost 3rd. The transmission has less than 40 miles on it and has seen no wide open blasts. The trans shifts fine from 1st to 2nd but will not go into 3rd or 4th. I towed the car home and sent an email and am waiting to hear from Brian Hofer.
Any suggestions that I can check? ( I am not a transmission guy! I have never opened one. )

Thanks
Bryan

 

[chris718]

There really is nothing else to check.If you lose 3 and 4 and the rest is ok the direct clutch has failed.The trans must come out and go back to the builder.

 

[Phoneguy]

Thanks for the reply.
NOT what I wanted to hear!!

Any reason this would happen? This trans has 8 direct clutches,5 forwards and 3 OD.

Bryan