Hi Bugs,
Table B-2 in the 4350/4351 manual has a channel to pin # for the 435x to the TBX-68. The Screw Terminals on the CB-68_LPR say Jbefore the number, but J68 will still match up with CH0+ on the 435x.
NI 4350/4351 User ManualThe pdf on that page contains the table for the 435x pins. If you can not see the terminal numbers on the CB-68_LPR then the following link has a image of it.
CB-68LPRLet me know if you need any further help with this issue.
Have a great day,
Michael D
Applications Engineer
National Instrument