Has anyone used 11/32" 7 Degree +0.050” Installed Height Valve Lock Set in their Rover V8?

In the 4.6 engine I have just built I have 0.450” intake lift and 0.474” exhaust lift. Replaced the valve springs for a set which get coil bind at 0.505”, so I only have 0.031" on the exhaust before the springs bind.

Want to use the valve lock set to give me 0.081” on the exhaust.

Just wondering peoples experience with them.