Very nice! I hope you're open to some thoughts, though. The photos showing the top of the tank reveals that all of the 'panels' are too uniform, in that the centers are all 'clean' (relatively). I would consider adding more randomness to those 'panels' because, to my eyes, it looks 'planned' and not natural. Similarly, the turret numbers are surrounded by a 'clean' area around them; why? I would add more whitewash to those spots.
I really like the tracks...I think you did a great job on those, including the hull-mounted spares!
You say you're not that pleased with the tow cables. I think they are wonderful! I'd keep them as is, really.
One last thing...I'd add some soot around the exhausts on the hull. Don't go overboard...just a bit, but I think it needs some black and dark brownish pigments.
I would be proud of this, if this were my model. It turns out that I have the 1942 Lightweight Cast version of the KV-1 in my collection. I'll be pleased if mine turns out nearly this well!
Really nicely done!