Ok got ch-,vol-, &mute to work learned on 7500 from 922 remote
the two commands that I can't get to work are Ch+ and Vol+ here are some hex learned from the 920 &922 remotes that didn't work I also listed the ch- and vol- that I did learn in case that is of value

ch+ that i learned from 920 remote on 7500
and does not work
0000 0067 0000 000D 00C8 0078 0028 0078
0028 0028 0028 0078 0028 0028 0028 0028
0028 0028 0028 0028 0028 0028 0028 0078
0028 0078 0028 0078 0028 0968

ch+ that i learned from 922 remote on 7500
and does not work
0000 0065 0000 000D 00CD 007A 0029 007A
0029 0029 0029 007A 0029 0029 0029 0029
0029 0029 0029 0029 0029 0029 0029 007A
0029 007A 0029 007A 0029 08E6

ch - that works on 7500
learned from 922 remote on 7500
0000 006B 0000 000E 00C2 004D 0027 0027
0027 0027 0027 0027 0027 0027 0027 0074
0027 0027 0027 0027 0027 0027 0027 0074
0027 0027 0027 0074 0027 0027 0027 095D

vol+ that i learned from 920 remote on 7500
and does not work
0000 0063 0000 000B 00CA 0043 0010 0074
0010 0074 0010 0074 0043 0043 0010 0074
0010 0074 0010 0074 0043 0043 0043 0043
0043 0047

vol+ that i learned from 922 remote on 7500
and does not work
0000 006B 0000 000D 00C2 0074 0027 0074
0027 0074 0027 0027 0027 0027 0027 0027
0027 0027 0027 0027 0027 0074 0027 0027
0027 0027 0027 0074 0027 08C4

vol- that works on 7500
learned from 922 remote on 7500
0000 0067 0000 000E 0028 0026 0028 0026
0028 0026 0028 0026 0028 0026 0028 0077
0028 0077 0028 09AC 00CA 004F 0028 0026
0028 0026 0028 0077 0028 0026 0028 002D

Peter if you can direct someone that knows something about IR to have a look at it I would appreciate it. I have read their posts off and on, but now that i need their help I have no idea who they are.
thanks for any help