3-5 shift and 3-4 shift

[worldwide73]

I have a direct solenoid and it works. Nice firm shift from 3-5. BUT every once in a while I have what i would call a long shift. Never thought anything about as I've always read that the transmission doesn't ever use 4 except when the fluid is below 0 degrees. Well my fluid is warm when it does this. So I saw Mark K. post on PSN that the transmission can use fourth on other occasions such as too low speed, too high speed, engine rpm, etc etc. So I'm thinking when I get the long shift its shifting from 3-4 instead of 3-5. It happens at random times, sometimes from takeoff and sometimes whens downshifting.

Maybe i need to see if matt can elimate 4 all together or should I not care?