Delay selecting the new row in UltraGrid after query Reposit

I have an UltraGrid with 15 rows. You can see about 5 rows on the screen.

It is attached to a bindingsource, which is attached to a query on a temp-table. By default the first row (record) is selected using a GET-FIRST().

This is how I initialize the binding source:

/* populate the temp-table, then... */

DATASET dsRecords:HANDLE:TOP-NAV-QUERY():QUERY-PREPARE("preselect each ttRecords no-lock").
DATASET dsRecords:HANDLE:TOP-NAV-QUERY():QUERY-OPEN().
DATASET dsRecords:HANDLE:TOP-NAV-QUERY():GET-FIRST().
bindingsource:HANDLE = DATASET dsRecords:HANDLE:TOP-NAV-QUERY.

The user types a number into a box and the leave event fires a reload method that repositions the query based on the entered data. This method also does a lot of other work after.

Here is the code, assume no error checking:

ultragrid:AfterRowActivate:Subscribe(THIS-OBJECT:ultragrid_AfterRowActivate).

/* now do another half second of processing, loading usercontrols, etc etc */

When the record I am repositioning to is visible on screen, no issue, the record is selected instantly.

When the record is NOT visible on screen, there is about a 1 second delay before the ultragrid repositions itself and displays the selected record. In that time, the rest of the code has carried on and loads in normal time.

I can type the value, hit tab, wait .5 seconds and the entire screen is loaded, then wait another .5 seconds and the ultragrid will be updated.

Also, you will see I am trying to stop the afterrowactivate from firing on this reposition command. It always fires.

How can I minimize the delay?

How I can make progress wait for the update to the ultragrid before executing the subscribe?

Thank you in advance!!