The DML T34/85 is an excellent kit. However, no matter which track you use, one thing be aware:
On Step 3, DO NOT glue the frontal idler wheel axles(#A6 base on my older T-34/85 Mod. 1944 kit# 6066) at the first place. It is better to leave them loose so that they can be adjusted for the tension when you put on the individual tracks. Have fun on it.