Spur double idlers wont mesh up

Hi all,

My name is Jay and I am trying to get some gearing to work, but the gears just wont line up. It is a 'transfercase' with double idlers.

The gears are evolvent module 4 and created in SolidWorks (Toolbox > ANSI Metric > Power Transmissions > Gears > Spur Gear). The center distances are as many calculators give me, but the bottom gear (T3) just wont line up. What am I doing wrong?

Center distances:
T1 > T2 72,000mm
T2a > T2b 101,823mm
T2 > T3 88,000mm
T1 > T3 122,689mm



Thanks in advance!

Cheers,
J