Don't rule out Neil's postal reflash - I have the DP filter and airbox lid plus Termis on my Evo and the Rexxer reflash helped to transform the low-speed running.
Granted, an off-the-shelf reflash is never going to match a bespoke remap, (I've promised myself one one day), but it'll be 95% as effective. There are a couple of Rexxer maps available to suit different set-ups so give Neil a ring to seek his advice.
You could also try lowering the gearing, which helps with town riding.
Note that the 796 and Evo share a lightweight flywheel, (half the weight of the older 1100), and this also contributes to the low-speed lumpiness.
Have a look here for more information
http://www.ukmonster.co.uk/monster/s...ad.php?t=54450
If it helps, the Öhlins part no. for the 105N/mm spring is 01092-36. If for any reason Moto Rapido can't get one, try Mark Hammond at MH Racing 01249 721001
www.mhracing.com. The spring should be around £75. If you want to fit it yourself, you can borrow my spring compressors!