Disruption to Soviet industry was partially responsible for the items in that report quoted above. I've seen another passage that describes flaws in the armor created in making it. ie sections not evenly tempered, some sort of crack or pocket at several points. German records sow the T34s examined in 1941 to lack the problems cited above. Those would have been built in late 1940 & the first half of 1941.

The transmission problems may very well have been the result of the post 1941 production problems.

Several British weapons & other designs were produced in the US. ie the Merlin engine. Many landing craft. The 57mm (six pounder) AT gun. One wonders what might have resulted if the US Army Ordinance dept had got hold of a T34 test model or a KV1 in 1940 or early 1941.