Don't take the written word as gospel Tim
The first orange tank '71 TM400 was a little snappy, in more ways than one, this was the main cause for the stigma that dogged all the TM400's but by '74/'75 they were getting things sorted. Even the early models can now be tamed quite easily
History hasn't been kind to them. The stock TS400's are in comparison quite docile and domesticated