Conditional Formatting date range based on 5 sequential start dates

Hello,

I am attempting to color code rows in excel based on a start date for a project. Each row represents a project. Each project consists of 4 parts. I started from a schedule that had only one conditional format and modified it for additional steps. Now the formatting works for only 2 of the 4 parts.

E = start date

F = length of part 1 in days

G = length of part 2 in days

H = length of part 3 in days

I = length of part 4 in days

J = date on schedule

Part 4 (works) =IF(J$1>=$E3+$F3+$G3+$H3,IF(J$1<$E3+$F3+$G3+$H3+$I3,TRUE,FALSE),FALSE)

Part 3 (works) =IF(J$1>=$E3+$F3+$G3,IF(J$1<$E3+$F3+$G3+$H3,TRUE,FALSE),FALSE)

Part 2 (doesn't work) =IF(J$1>=$E3+$F3,IF(J$1<$E3+$F3+$G3,TRUE,FALSE),FALSE)

Part 1 (doesn't work) =IF(J$1>=$E3,IF(J$1<$E3+$F3,TRUE,FALSE),FALSE)

Is this a glitch or am I missing something? Thanks for the help.