Did the valve work prior to installing the ULT? If it did, then the problem is most likely that you need a few more shims. Otherwise, the on-off may not open to allow the front chamber to charge.
Make sure the valve works properly prior to ULT installation. If it works, then it should not need any further sear or level 10 adjustments, even when you install the ULT. Once the ULT is installed, you should only need to play around with the number of shims to fine tune the timing.
Except for the Automag in front, its usually the man behind the equipment that counts.