[hunterdave99]

I use a FortecStar 786 receiver.
I did not have to change the antenna position at all. I was still receiving the other channels on G10R (on other transponders) just fine. Just not getting the Korean channels because they changed the TP info.
First I went the menu scren and entered the Edit Menu.
In there I selected the Satellite/TP Edit screen.
On this screen I selected the satellite (G10R) and hit add.
Then I entered the new transponder data that I got from Lyngsat.
(beforehand I had compared all the transponder data that originally came preprogrammed for G10R in my receiver with the actual TP data from lyngsat and I found that there were 4 or 5 more transponders in use than my receiver had, so I added them as well)
Once I had the new transponders programmed into the receiver then I went back to the main menu.
I went to the install menu and then to the channel search screen.
There I did another channel search on the satellite and it searched the old TPs as well as the new one picking up the new Korean stations as it went along.
I did nothing to the old TP info in the receiver. Just in case somebody else comes along and uses that transponder on the satellite, its data is stored and will always search that TP anytime that I do a channel search on that sat.
If you cannot get the Korean channels on that TP I would check that you are at least still getting other channels on other TPs on G10R that way you know that you are locked onto the satellite good.
If you can get other channels, then your antenna positioning should be good and you are just having problems entering the new TP.
I hope that some of this helped.
Dave in San Antonio.