So l decided to loosen the track tension on my lS-2 so that it looked like a real one that had just driven out of the show room, a little track saggy!
The two 2.5mm hex bolts need to be fully removed to release the idler hub from the front hull and the hub can then be gently prised away. Whilst its in the hand, l removed the 1.5mm grub screw that retains the stub axle and lubed the shaft.
At this point the hub can be replaced and twisted to a new position. The shaft on the hub is many multi-sided so you can select your preferred level of slack and match both sides accurately. The pic below can be mirrored with several real IS-2s but it's a bit more than l want - I'd prefer my tracks to stay on!
This is how l finished up, realistic yet practical. The whole procedure took about 5 mins.
l have to say, the more l work on this model the more l appreciate Taigen's good design. I have to kick myself to remind myself it cost just 399 UK quid and was hand deliver at that! I am.now seriously considering getting another to convert the plastic top hull to a ISU of some kind - only the front changes. I'd wait for Taigen to do this for me but l really can't wait that long!!
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Then, a beaut like this one pops up. 
My last build (not much room, or time, for more) was actually going to be the Ludwig Comet..
