Hi Johan
I'm no expert on accuracy, however I've just primed the Mod '62 kit and I have the Mod '72 kit in the stash.
I do believe there are some accuracy issues etc but there are various articles on the net which highlight these.
Not sure if we are allowed to mention other forum names and links here but another forum has a thread dedicated to "how to build a t-62" with various tips and info. If you interested pm me and I'll send you the link.
As for the mod '62 kit I busy with, in my opinion it looks like a T-62 which is good enough for my needs.
I don't recall any fit issues or having to use any filler and the quality of the plastic is great. Trumpeter have really up'd their game.
Problems I encountered:
Fuel tanks, I assembled them and only added their supports to the hull later. Bad idea as I got the orientation wrong and they ended up pointing the wrong way. Be careful there.
There are 2 options for the mantle where the barrel connects to the turret, the part numbers called out are swapped around. They are C7 and B14
There is a "ring" part B22, which fits the barrel and connects to the searchlight. The part was molded too small and doesn't fit the metal barrel well. Another builder suggested that I cut the part at the 6 o'clock position to make it fit and then fill etc if needed. That worked, alternatively I think the Voyager PE set has a replacement part.
Other than that was a joy to build and is the most accurate 1/35 plastic styrene T-62 kit available.