timer problem that affects gameplay

as you can see in example file and picture, i have one object and it has spawn routines.every routine has a timer.

here is problem;

even i give values to timers that objects cant stick together too much ,but they spawned together like in the picture. how can i prevent that? or anyway to make timer value integer?
while total time was 114secs, 4x spawn and 1x spawn met as usual .(3192) .

note: i did timers int(x) and same.