[brum1]

Tinbasher,

Lay the bows in place on a brand new wood kit (30 Coupe) and I measure the following:

Front header back edge to first bow center: 7-1/2"
1st bow center to 2nd bow center: 7-1/2"
2nd bow center to 3rd bow center: 8-1/4"
3rd bow center to 4th bow center: 8-1/2"