Murdog....
Element Spacing
From reflector to driven is 78.7"
From driven to 1st dir is 43.3"
From 1st dir to 2nd dir is 61.4"
From 2nd dir to 3rd dir is 114.9"
From 3rd dir to 4th dir is 142.5"
Now, after the 5th element you need a minimum of 9 feet. My 5th is mounted at the end of the boom. Element length is critical.
Reflector is 210.2" long
Driven is 203.1" long
1sr dir is 197.6" long
2nd dir is 193.7" long
3rd dir is 187.4" long
4th dir is 185.0" long