The aluminum transaxle Cub Cadets are susceptible to breaking, where the front of the transaxle bolts to the brackets that bolts to the frame.
This is a real weak spot.
I got a buddy that makes a steel bracket, it bolts to the axle housings, then connects to the frame.
They kind of look like traction bars, shown here as the black brackets.
The extra hole in the frame attachment plate is for the old style Haban rear bracket.
I just thought you would like to see there is a fix to insure you do not loose the transaxle!!