I've built two and plan to build a couple more. Biggest issue on mine--the road wheels don't always line up. Also, the huge sink holes in some parts. I built the original kits--so I used the original plastic tracks. See my model posted on my club web site. This is the Russian lend lease Valentine XI.
http://public.fotki.com/midmichiganmodelmakers/members_models/brian_francis/dscn2563.html
http://public.fotki.com/midmichiganmodelmakers/members_models/brian_francis/dscn2564.html
Brian Francis
Midland Michigan