BIAB 2011, build 319.

Song Tempo 130. Time 4/4.
I insert a tempo change for bar number 79.
Bar 79 consists or two chords, F on beat one and G7 on beat 3
I insert a Change tempo to 60 on the F chord.
and then a Change tempo back to 130 on the first chord of bar 80.

Here's what happens:
The song slows down as it should on the F chord... BUT
then quickly plays the G7 (you can hardly even hear it go by so fast) and then goes back to 130 the next bar.

So instead of playing F and then G7, EVENLY, at the slower tempo, it swallows the G7!

Any tips to overcome this problem?
Workarounds?
I basically want to hold the F and G7 chords for about two or three times as long as normal.

TIA


BIABguy