FC Getting B52's to bomb from altitude

Morning...

I have tried using the mission editor in the vanilla Jane's FC patched to v1.38 with NWT 19.2.

Also tried in Sonalysts NCP with NWT 19.2.

I set the B52's to varying altitudes above 25,000 to come over a target to drop their bomb loads and depart.

But they don't, they either drop a partial load or dive down like a tactical fighrt/bomber and circle the target.

Any suggestions on how to make them keep altiude, fly and drop ordinance like a heavy, high altitude bomber.

I have been able to get the SR71 to stay at altitude and speed for recce, though for some flights I do need to provide inflight refueling.

The TR1 (U2) work the best at high altitudes for recce, but are slow.