Grp valley raised center not sitting flat on valley boards causing tiles to kick up

[Rickyshord]

Hi all,
Installing a grp over batten valley tough I'm starting to cut the tiles in but the central part of the valley seems to rise up and is kicking the tiles up and therefore don't sit flat on the over lap .

If i push down on the center of the valley the tiles sit flatter ...

Will the weight of the tiles press down the grp tough or have I done something wrong to cause the valley to spring up ?

 

[noseall]

Hi all,
Installing a grp over batten valley tough I'm starting to cut the tiles in but the central part of the valley seems to rise up and is kicking the tiles up and therefore don't sit flat on the over lap .

If i push down on the center of the valley the tiles sit flatter ...

Will the weight of the tiles press down the grp tough or have I done something wrong to cause the valley to spring up ?

View attachment 309637

We refuse to use that version. Garbage.