Sources vary on the I-16 some say it became dangerously unstable in a dive and had trouble with the high G forces of pullout. IIRC, the wings were later strengthened, but there are Japanese reports that they would avoid the diving I-16s and then shoot them down when I-16 pilot struggled to pull out of their dive. There are also many reports that the I-16 was an unstable gun platform. Why didn't Stalin want to pursue an all-out war with the Japanese... His concerns lay elsewhere. Japan had been given a "bloody nose", and as a result, her political relations with Germany were at their lowest ebb. Then, Is is pure happenstance that as soon as a cease fire was agreed to, Stalin's forces almost immediately moved into Poland. Further, the Soviets had begun their planning in September, 1939, for the upcoming "Winter War" with Finland, and it was set to begin in November of that year. So, no, it was not Soviet Logistics that held the Soviets back, but Stalin's will, and Stalin's will alone that prevented an all-out war with Japan.