This machine never went into full production but made it's mark before being cancelled.
I read two different stories concerning it's service. The first said that two were sent to north Africa for battlefield testing where they were destroyed in a matter of two or three months, the other eight that were ordered were cancelled.
The second story said eight were sent to the eastern front for combat field testing and were destroyed or captured there.
The problems for not going into full production were #1- Extra weight cause them to be slow and couldn't escape danger when needed. #2- Limited gun traverse, commanders wanted something with a 360 gun traverse.
Either way they were in combat and did well even with their limitations.
Tony lee